Home / 5,276.79-7,279.20-3,387.87

Finding the Fourth Proportional to 5,276.79, 7,279.20 and 3,387.87

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Solution

The fourth proportional to 5,276.79, 7,279.20 and 3,387.87 is: 4,673.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.79 : 7,279.20 = 3,387.87 : x
  2. Step 2: Convert to fraction form
    5,276.79/7,279.20 = 3,387.87/x
  3. Step 3: Cross multiply
    5,276.79x = 7,279.20 × 3,387.87
  4. Step 4: Simplify right side
    5,276.79x = 24,660,983.30
  5. Step 5: Solve for x
    x = 24,660,983.30/5,276.79
  6. Step 6: Final answer
    x = 4,673.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.