Home / 5,117.43-7,676.16-1,419.86

Finding the Fourth Proportional to 5,117.43, 7,676.16 and 1,419.86

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Solution

The fourth proportional to 5,117.43, 7,676.16 and 1,419.86 is: 2,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.43 : 7,676.16 = 1,419.86 : x
  2. Step 2: Convert to fraction form
    5,117.43/7,676.16 = 1,419.86/x
  3. Step 3: Cross multiply
    5,117.43x = 7,676.16 × 1,419.86
  4. Step 4: Simplify right side
    5,117.43x = 10,899,049.80
  5. Step 5: Solve for x
    x = 10,899,049.80/5,117.43
  6. Step 6: Final answer
    x = 2,129.79

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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.