Home / 8,001.78-12,002.39-5,388.04

Finding the Fourth Proportional to 8,001.78, 12,002.39 and 5,388.04

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Solution

The fourth proportional to 8,001.78, 12,002.39 and 5,388.04 is: 8,081.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,001.78 : 12,002.39 = 5,388.04 : x
  2. Step 2: Convert to fraction form
    8,001.78/12,002.39 = 5,388.04/x
  3. Step 3: Cross multiply
    8,001.78x = 12,002.39 × 5,388.04
  4. Step 4: Simplify right side
    8,001.78x = 64,669,357.42
  5. Step 5: Solve for x
    x = 64,669,357.42/8,001.78
  6. Step 6: Final answer
    x = 8,081.87

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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.