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Finding the Fourth Proportional to 5,691.84, 8,538.88 and 2,917.12

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Solution

The fourth proportional to 5,691.84, 8,538.88 and 2,917.12 is: 4,376.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,691.84 : 8,538.88 = 2,917.12 : x
  2. Step 2: Convert to fraction form
    5,691.84/8,538.88 = 2,917.12/x
  3. Step 3: Cross multiply
    5,691.84x = 8,538.88 × 2,917.12
  4. Step 4: Simplify right side
    5,691.84x = 24,908,937.63
  5. Step 5: Solve for x
    x = 24,908,937.63/5,691.84
  6. Step 6: Final answer
    x = 4,376.25

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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.