Home / 8,521.72-12,781.56-2,282.20

Finding the Fourth Proportional to 8,521.72, 12,781.56 and 2,282.20

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Solution

The fourth proportional to 8,521.72, 12,781.56 and 2,282.20 is: 3,423.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.72 : 12,781.56 = 2,282.20 : x
  2. Step 2: Convert to fraction form
    8,521.72/12,781.56 = 2,282.20/x
  3. Step 3: Cross multiply
    8,521.72x = 12,781.56 × 2,282.20
  4. Step 4: Simplify right side
    8,521.72x = 29,170,076.23
  5. Step 5: Solve for x
    x = 29,170,076.23/8,521.72
  6. Step 6: Final answer
    x = 3,423.03

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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.