Home / 8,717.10-12,028.68-5,179.83

Finding the Fourth Proportional to 8,717.10, 12,028.68 and 5,179.83

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Solution

The fourth proportional to 8,717.10, 12,028.68 and 5,179.83 is: 7,147.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.10 : 12,028.68 = 5,179.83 : x
  2. Step 2: Convert to fraction form
    8,717.10/12,028.68 = 5,179.83/x
  3. Step 3: Cross multiply
    8,717.10x = 12,028.68 × 5,179.83
  4. Step 4: Simplify right side
    8,717.10x = 62,306,517.52
  5. Step 5: Solve for x
    x = 62,306,517.52/8,717.10
  6. Step 6: Final answer
    x = 7,147.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.