Home / 8,691.08-13,031.75-2,847.20

Finding the Fourth Proportional to 8,691.08, 13,031.75 and 2,847.20

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Solution

The fourth proportional to 8,691.08, 13,031.75 and 2,847.20 is: 4,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.08 : 13,031.75 = 2,847.20 : x
  2. Step 2: Convert to fraction form
    8,691.08/13,031.75 = 2,847.20/x
  3. Step 3: Cross multiply
    8,691.08x = 13,031.75 × 2,847.20
  4. Step 4: Simplify right side
    8,691.08x = 37,103,940.56
  5. Step 5: Solve for x
    x = 37,103,940.56/8,691.08
  6. Step 6: Final answer
    x = 4,269.20

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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.