Home / 3,177.87-4,385.45-1,761.56

Finding the Fourth Proportional to 3,177.87, 4,385.45 and 1,761.56

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Solution

The fourth proportional to 3,177.87, 4,385.45 and 1,761.56 is: 2,430.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.87 : 4,385.45 = 1,761.56 : x
  2. Step 2: Convert to fraction form
    3,177.87/4,385.45 = 1,761.56/x
  3. Step 3: Cross multiply
    3,177.87x = 4,385.45 × 1,761.56
  4. Step 4: Simplify right side
    3,177.87x = 7,725,248.67
  5. Step 5: Solve for x
    x = 7,725,248.67/3,177.87
  6. Step 6: Final answer
    x = 2,430.95

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1.5x scale

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.