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Finding the Fourth Proportional to 8,376.68, 12,559.52 and 4,679.30

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Solution

The fourth proportional to 8,376.68, 12,559.52 and 4,679.30 is: 7,015.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,376.68 : 12,559.52 = 4,679.30 : x
  2. Step 2: Convert to fraction form
    8,376.68/12,559.52 = 4,679.30/x
  3. Step 3: Cross multiply
    8,376.68x = 12,559.52 × 4,679.30
  4. Step 4: Simplify right side
    8,376.68x = 58,769,805.03
  5. Step 5: Solve for x
    x = 58,769,805.03/8,376.68
  6. Step 6: Final answer
    x = 7,015.88

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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.