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Finding the Fourth Proportional to 6,139.86, 8,473.23 and 3,487.14

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Solution

The fourth proportional to 6,139.86, 8,473.23 and 3,487.14 is: 4,812.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.86 : 8,473.23 = 3,487.14 : x
  2. Step 2: Convert to fraction form
    6,139.86/8,473.23 = 3,487.14/x
  3. Step 3: Cross multiply
    6,139.86x = 8,473.23 × 3,487.14
  4. Step 4: Simplify right side
    6,139.86x = 29,547,339.26
  5. Step 5: Solve for x
    x = 29,547,339.26/6,139.86
  6. Step 6: Final answer
    x = 4,812.38

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Find fourth proportional to 3,069.93, 4,236.62 and 1,743.57
Half scale
Find fourth proportional to 12,279.72, 16,946.46 and 6,974.28
Double scale
Find fourth proportional to 6,140.86, 8,474.61 and 3,488.14
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.