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Finding the Fourth Proportional to 6,531.90, 9,015.04 and 3,699.42

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Solution

The fourth proportional to 6,531.90, 9,015.04 and 3,699.42 is: 5,105.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,531.90 : 9,015.04 = 3,699.42 : x
  2. Step 2: Convert to fraction form
    6,531.90/9,015.04 = 3,699.42/x
  3. Step 3: Cross multiply
    6,531.90x = 9,015.04 × 3,699.42
  4. Step 4: Simplify right side
    6,531.90x = 33,350,419.28
  5. Step 5: Solve for x
    x = 33,350,419.28/6,531.90
  6. Step 6: Final answer
    x = 5,105.78

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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.