Home / 3,387.78-5,079.06-1,631.88

Finding the Fourth Proportional to 3,387.78, 5,079.06 and 1,631.88

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Solution

The fourth proportional to 3,387.78, 5,079.06 and 1,631.88 is: 2,446.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.78 : 5,079.06 = 1,631.88 : x
  2. Step 2: Convert to fraction form
    3,387.78/5,079.06 = 1,631.88/x
  3. Step 3: Cross multiply
    3,387.78x = 5,079.06 × 1,631.88
  4. Step 4: Simplify right side
    3,387.78x = 8,288,416.43
  5. Step 5: Solve for x
    x = 8,288,416.43/3,387.78
  6. Step 6: Final answer
    x = 2,446.56

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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.