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Finding the Fourth Proportional to 6,615.55, 9,129.53 and 3,631.32

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Solution

The fourth proportional to 6,615.55, 9,129.53 and 3,631.32 is: 5,011.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.55 : 9,129.53 = 3,631.32 : x
  2. Step 2: Convert to fraction form
    6,615.55/9,129.53 = 3,631.32/x
  3. Step 3: Cross multiply
    6,615.55x = 9,129.53 × 3,631.32
  4. Step 4: Simplify right side
    6,615.55x = 33,152,233.53
  5. Step 5: Solve for x
    x = 33,152,233.53/6,615.55
  6. Step 6: Final answer
    x = 5,011.26

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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.