Home / 2,781.85-4,177.55-2,470.21

Finding the Fourth Proportional to 2,781.85, 4,177.55 and 2,470.21

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Solution

The fourth proportional to 2,781.85, 4,177.55 and 2,470.21 is: 3,709.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.85 : 4,177.55 = 2,470.21 : x
  2. Step 2: Convert to fraction form
    2,781.85/4,177.55 = 2,470.21/x
  3. Step 3: Cross multiply
    2,781.85x = 4,177.55 × 2,470.21
  4. Step 4: Simplify right side
    2,781.85x = 10,319,425.79
  5. Step 5: Solve for x
    x = 10,319,425.79/2,781.85
  6. Step 6: Final answer
    x = 3,709.56

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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.