Home / 2,613.92-3,921.80-1,152.86

Finding the Fourth Proportional to 2,613.92, 3,921.80 and 1,152.86

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Solution

The fourth proportional to 2,613.92, 3,921.80 and 1,152.86 is: 1,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.92 : 3,921.80 = 1,152.86 : x
  2. Step 2: Convert to fraction form
    2,613.92/3,921.80 = 1,152.86/x
  3. Step 3: Cross multiply
    2,613.92x = 3,921.80 × 1,152.86
  4. Step 4: Simplify right side
    2,613.92x = 4,521,286.35
  5. Step 5: Solve for x
    x = 4,521,286.35/2,613.92
  6. Step 6: Final answer
    x = 1,729.70

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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.