Home / 10,312.18-15,468.89-2,917.20

Finding the Fourth Proportional to 10,312.18, 15,468.89 and 2,917.20

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Solution

The fourth proportional to 10,312.18, 15,468.89 and 2,917.20 is: 4,375.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,312.18 : 15,468.89 = 2,917.20 : x
  2. Step 2: Convert to fraction form
    10,312.18/15,468.89 = 2,917.20/x
  3. Step 3: Cross multiply
    10,312.18x = 15,468.89 × 2,917.20
  4. Step 4: Simplify right side
    10,312.18x = 45,125,818.73
  5. Step 5: Solve for x
    x = 45,125,818.73/10,312.18
  6. Step 6: Final answer
    x = 4,375.97

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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.