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Finding the Fourth Proportional to 5,877.32, 8,817.18 and 1,981.64

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Solution

The fourth proportional to 5,877.32, 8,817.18 and 1,981.64 is: 2,972.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,877.32 : 8,817.18 = 1,981.64 : x
  2. Step 2: Convert to fraction form
    5,877.32/8,817.18 = 1,981.64/x
  3. Step 3: Cross multiply
    5,877.32x = 8,817.18 × 1,981.64
  4. Step 4: Simplify right side
    5,877.32x = 17,472,476.58
  5. Step 5: Solve for x
    x = 17,472,476.58/5,877.32
  6. Step 6: Final answer
    x = 2,972.86

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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.