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Finding the Fourth Proportional to 4,617.87, 6,928.14 and 2,154.15

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Solution

The fourth proportional to 4,617.87, 6,928.14 and 2,154.15 is: 3,231.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,617.87 : 6,928.14 = 2,154.15 : x
  2. Step 2: Convert to fraction form
    4,617.87/6,928.14 = 2,154.15/x
  3. Step 3: Cross multiply
    4,617.87x = 6,928.14 × 2,154.15
  4. Step 4: Simplify right side
    4,617.87x = 14,924,252.78
  5. Step 5: Solve for x
    x = 14,924,252.78/4,617.87
  6. Step 6: Final answer
    x = 3,231.85

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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.