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Finding the Fourth Proportional to 8,345.70, 11,517.08 and 4,619.70

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Solution

The fourth proportional to 8,345.70, 11,517.08 and 4,619.70 is: 6,375.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.70 : 11,517.08 = 4,619.70 : x
  2. Step 2: Convert to fraction form
    8,345.70/11,517.08 = 4,619.70/x
  3. Step 3: Cross multiply
    8,345.70x = 11,517.08 × 4,619.70
  4. Step 4: Simplify right side
    8,345.70x = 53,205,454.48
  5. Step 5: Solve for x
    x = 53,205,454.48/8,345.70
  6. Step 6: Final answer
    x = 6,375.19

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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.