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Finding the Fourth Proportional to 6,615.71, 9,908.36 and 3,687.53

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Solution

The fourth proportional to 6,615.71, 9,908.36 and 3,687.53 is: 5,522.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.71 : 9,908.36 = 3,687.53 : x
  2. Step 2: Convert to fraction form
    6,615.71/9,908.36 = 3,687.53/x
  3. Step 3: Cross multiply
    6,615.71x = 9,908.36 × 3,687.53
  4. Step 4: Simplify right side
    6,615.71x = 36,537,356.31
  5. Step 5: Solve for x
    x = 36,537,356.31/6,615.71
  6. Step 6: Final answer
    x = 5,522.82

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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.