Home / 8,721.75-13,082.52-2,148.00

Finding the Fourth Proportional to 8,721.75, 13,082.52 and 2,148.00

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Solution

The fourth proportional to 8,721.75, 13,082.52 and 2,148.00 is: 3,221.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.75 : 13,082.52 = 2,148.00 : x
  2. Step 2: Convert to fraction form
    8,721.75/13,082.52 = 2,148.00/x
  3. Step 3: Cross multiply
    8,721.75x = 13,082.52 × 2,148.00
  4. Step 4: Simplify right side
    8,721.75x = 28,101,199.87
  5. Step 5: Solve for x
    x = 28,101,199.87/8,721.75
  6. Step 6: Final answer
    x = 3,221.97

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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.