Home / 8,521.26-12,781.08-2,974.65

Finding the Fourth Proportional to 8,521.26, 12,781.08 and 2,974.65

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Solution

The fourth proportional to 8,521.26, 12,781.08 and 2,974.65 is: 4,461.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.26 : 12,781.08 = 2,974.65 : x
  2. Step 2: Convert to fraction form
    8,521.26/12,781.08 = 2,974.65/x
  3. Step 3: Cross multiply
    8,521.26x = 12,781.08 × 2,974.65
  4. Step 4: Simplify right side
    8,521.26x = 38,019,239.62
  5. Step 5: Solve for x
    x = 38,019,239.62/8,521.26
  6. Step 6: Final answer
    x = 4,461.69

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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.