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Finding the Fourth Proportional to 8,474.64, 12,708.76 and 2,926.44

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Solution

The fourth proportional to 8,474.64, 12,708.76 and 2,926.44 is: 4,388.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.64 : 12,708.76 = 2,926.44 : x
  2. Step 2: Convert to fraction form
    8,474.64/12,708.76 = 2,926.44/x
  3. Step 3: Cross multiply
    8,474.64x = 12,708.76 × 2,926.44
  4. Step 4: Simplify right side
    8,474.64x = 37,191,423.61
  5. Step 5: Solve for x
    x = 37,191,423.61/8,474.64
  6. Step 6: Final answer
    x = 4,388.55

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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.