Home / 2,729.11-3,766.20-1,550.21

Finding the Fourth Proportional to 2,729.11, 3,766.20 and 1,550.21

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Solution

The fourth proportional to 2,729.11, 3,766.20 and 1,550.21 is: 2,139.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,729.11 : 3,766.20 = 1,550.21 : x
  2. Step 2: Convert to fraction form
    2,729.11/3,766.20 = 1,550.21/x
  3. Step 3: Cross multiply
    2,729.11x = 3,766.20 × 1,550.21
  4. Step 4: Simplify right side
    2,729.11x = 5,838,400.90
  5. Step 5: Solve for x
    x = 5,838,400.90/2,729.11
  6. Step 6: Final answer
    x = 2,139.31

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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.