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Finding the Fourth Proportional to 7,691.70, 10,613.26 and 4,287.97

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Solution

The fourth proportional to 7,691.70, 10,613.26 and 4,287.97 is: 5,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.70 : 10,613.26 = 4,287.97 : x
  2. Step 2: Convert to fraction form
    7,691.70/10,613.26 = 4,287.97/x
  3. Step 3: Cross multiply
    7,691.70x = 10,613.26 × 4,287.97
  4. Step 4: Simplify right side
    7,691.70x = 45,509,340.48
  5. Step 5: Solve for x
    x = 45,509,340.48/7,691.70
  6. Step 6: Final answer
    x = 5,916.68

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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.