Home / 8,478.18-12,717.07-2,238.62

Finding the Fourth Proportional to 8,478.18, 12,717.07 and 2,238.62

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Solution

The fourth proportional to 8,478.18, 12,717.07 and 2,238.62 is: 3,357.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.18 : 12,717.07 = 2,238.62 : x
  2. Step 2: Convert to fraction form
    8,478.18/12,717.07 = 2,238.62/x
  3. Step 3: Cross multiply
    8,478.18x = 12,717.07 × 2,238.62
  4. Step 4: Simplify right side
    8,478.18x = 28,468,747.97
  5. Step 5: Solve for x
    x = 28,468,747.97/8,478.18
  6. Step 6: Final answer
    x = 3,357.89

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1.5x scale

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.