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Finding the Fourth Proportional to 3,688.58, 5,532.75 and 915.27

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Solution

The fourth proportional to 3,688.58, 5,532.75 and 915.27 is: 1,372.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.58 : 5,532.75 = 915.27 : x
  2. Step 2: Convert to fraction form
    3,688.58/5,532.75 = 915.27/x
  3. Step 3: Cross multiply
    3,688.58x = 5,532.75 × 915.27
  4. Step 4: Simplify right side
    3,688.58x = 5,063,960.09
  5. Step 5: Solve for x
    x = 5,063,960.09/3,688.58
  6. Step 6: Final answer
    x = 1,372.88

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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.