Home / 7,419.43-11,129.15-2,979.15

Finding the Fourth Proportional to 7,419.43, 11,129.15 and 2,979.15

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Solution

The fourth proportional to 7,419.43, 11,129.15 and 2,979.15 is: 4,468.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.43 : 11,129.15 = 2,979.15 : x
  2. Step 2: Convert to fraction form
    7,419.43/11,129.15 = 2,979.15/x
  3. Step 3: Cross multiply
    7,419.43x = 11,129.15 × 2,979.15
  4. Step 4: Simplify right side
    7,419.43x = 33,155,407.22
  5. Step 5: Solve for x
    x = 33,155,407.22/7,419.43
  6. Step 6: Final answer
    x = 4,468.73

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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.