Home / 8,721.85-13,082.05-2,876.89

Finding the Fourth Proportional to 8,721.85, 13,082.05 and 2,876.89

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Solution

The fourth proportional to 8,721.85, 13,082.05 and 2,876.89 is: 4,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.85 : 13,082.05 = 2,876.89 : x
  2. Step 2: Convert to fraction form
    8,721.85/13,082.05 = 2,876.89/x
  3. Step 3: Cross multiply
    8,721.85x = 13,082.05 × 2,876.89
  4. Step 4: Simplify right side
    8,721.85x = 37,635,618.82
  5. Step 5: Solve for x
    x = 37,635,618.82/8,721.85
  6. Step 6: Final answer
    x = 4,315.10

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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.