Home / 8,764.70-13,147.11-2,921.30

Finding the Fourth Proportional to 8,764.70, 13,147.11 and 2,921.30

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Solution

The fourth proportional to 8,764.70, 13,147.11 and 2,921.30 is: 4,381.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,764.70 : 13,147.11 = 2,921.30 : x
  2. Step 2: Convert to fraction form
    8,764.70/13,147.11 = 2,921.30/x
  3. Step 3: Cross multiply
    8,764.70x = 13,147.11 × 2,921.30
  4. Step 4: Simplify right side
    8,764.70x = 38,406,636.01
  5. Step 5: Solve for x
    x = 38,406,636.01/8,764.70
  6. Step 6: Final answer
    x = 4,381.97

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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.