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Finding the Fourth Proportional to 8,397.69, 12,542.80 and 7,605.87

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Solution

The fourth proportional to 8,397.69, 12,542.80 and 7,605.87 is: 11,360.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,397.69 : 12,542.80 = 7,605.87 : x
  2. Step 2: Convert to fraction form
    8,397.69/12,542.80 = 7,605.87/x
  3. Step 3: Cross multiply
    8,397.69x = 12,542.80 × 7,605.87
  4. Step 4: Simplify right side
    8,397.69x = 95,398,887.22
  5. Step 5: Solve for x
    x = 95,398,887.22/8,397.69
  6. Step 6: Final answer
    x = 11,360.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.