Home / 5,119.20-7,060.08-3,998.40

Finding the Fourth Proportional to 5,119.20, 7,060.08 and 3,998.40

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Solution

The fourth proportional to 5,119.20, 7,060.08 and 3,998.40 is: 5,514.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.20 : 7,060.08 = 3,998.40 : x
  2. Step 2: Convert to fraction form
    5,119.20/7,060.08 = 3,998.40/x
  3. Step 3: Cross multiply
    5,119.20x = 7,060.08 × 3,998.40
  4. Step 4: Simplify right side
    5,119.20x = 28,229,023.87
  5. Step 5: Solve for x
    x = 28,229,023.87/5,119.20
  6. Step 6: Final answer
    x = 5,514.34

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Half scale
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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.