Home / 3,501.20-5,251.80-2,261.90

Finding the Fourth Proportional to 3,501.20, 5,251.80 and 2,261.90

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Solution

The fourth proportional to 3,501.20, 5,251.80 and 2,261.90 is: 3,392.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,501.20 : 5,251.80 = 2,261.90 : x
  2. Step 2: Convert to fraction form
    3,501.20/5,251.80 = 2,261.90/x
  3. Step 3: Cross multiply
    3,501.20x = 5,251.80 × 2,261.90
  4. Step 4: Simplify right side
    3,501.20x = 11,879,046.42
  5. Step 5: Solve for x
    x = 11,879,046.42/3,501.20
  6. Step 6: Final answer
    x = 3,392.85

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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.