Home / 2,765.28-4,145.75-1,377.86

Finding the Fourth Proportional to 2,765.28, 4,145.75 and 1,377.86

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Solution

The fourth proportional to 2,765.28, 4,145.75 and 1,377.86 is: 2,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.28 : 4,145.75 = 1,377.86 : x
  2. Step 2: Convert to fraction form
    2,765.28/4,145.75 = 1,377.86/x
  3. Step 3: Cross multiply
    2,765.28x = 4,145.75 × 1,377.86
  4. Step 4: Simplify right side
    2,765.28x = 5,712,235.48
  5. Step 5: Solve for x
    x = 5,712,235.48/2,765.28
  6. Step 6: Final answer
    x = 2,065.70

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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.