Home / 2,247.20-3,369.95-686.73

Finding the Fourth Proportional to 2,247.20, 3,369.95 and 686.73

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Solution

The fourth proportional to 2,247.20, 3,369.95 and 686.73 is: 1,029.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,247.20 : 3,369.95 = 686.73 : x
  2. Step 2: Convert to fraction form
    2,247.20/3,369.95 = 686.73/x
  3. Step 3: Cross multiply
    2,247.20x = 3,369.95 × 686.73
  4. Step 4: Simplify right side
    2,247.20x = 2,314,242.33
  5. Step 5: Solve for x
    x = 2,314,242.33/2,247.20
  6. Step 6: Final answer
    x = 1,029.83

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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.