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Finding the Fourth Proportional to 9,131.97, 13,699.80 and 3,866.97

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Solution

The fourth proportional to 9,131.97, 13,699.80 and 3,866.97 is: 5,801.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,131.97 : 13,699.80 = 3,866.97 : x
  2. Step 2: Convert to fraction form
    9,131.97/13,699.80 = 3,866.97/x
  3. Step 3: Cross multiply
    9,131.97x = 13,699.80 × 3,866.97
  4. Step 4: Simplify right side
    9,131.97x = 52,976,715.61
  5. Step 5: Solve for x
    x = 52,976,715.61/9,131.97
  6. Step 6: Final answer
    x = 5,801.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.