Home / 1,778.01-2,452.55-1,279.86

Finding the Fourth Proportional to 1,778.01, 2,452.55 and 1,279.86

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Solution

The fourth proportional to 1,778.01, 2,452.55 and 1,279.86 is: 1,765.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.01 : 2,452.55 = 1,279.86 : x
  2. Step 2: Convert to fraction form
    1,778.01/2,452.55 = 1,279.86/x
  3. Step 3: Cross multiply
    1,778.01x = 2,452.55 × 1,279.86
  4. Step 4: Simplify right side
    1,778.01x = 3,138,914.24
  5. Step 5: Solve for x
    x = 3,138,914.24/1,778.01
  6. Step 6: Final answer
    x = 1,765.41

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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.