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Finding the Fourth Proportional to 6,385.73, 8,812.23 and 3,591.23

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Solution

The fourth proportional to 6,385.73, 8,812.23 and 3,591.23 is: 4,955.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.73 : 8,812.23 = 3,591.23 : x
  2. Step 2: Convert to fraction form
    6,385.73/8,812.23 = 3,591.23/x
  3. Step 3: Cross multiply
    6,385.73x = 8,812.23 × 3,591.23
  4. Step 4: Simplify right side
    6,385.73x = 31,646,753.31
  5. Step 5: Solve for x
    x = 31,646,753.31/6,385.73
  6. Step 6: Final answer
    x = 4,955.85

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Half scale
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Double scale
Find fourth proportional to 6,386.73, 8,813.61 and 3,592.23
Similar ratio
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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.