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Finding the Fourth Proportional to 6,614.64, 9,128.31 and 3,630.75

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Solution

The fourth proportional to 6,614.64, 9,128.31 and 3,630.75 is: 5,010.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,614.64 : 9,128.31 = 3,630.75 : x
  2. Step 2: Convert to fraction form
    6,614.64/9,128.31 = 3,630.75/x
  3. Step 3: Cross multiply
    6,614.64x = 9,128.31 × 3,630.75
  4. Step 4: Simplify right side
    6,614.64x = 33,142,611.53
  5. Step 5: Solve for x
    x = 33,142,611.53/6,614.64
  6. Step 6: Final answer
    x = 5,010.49

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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.