Home / 3,151.23-4,726.85-842.73

Finding the Fourth Proportional to 3,151.23, 4,726.85 and 842.73

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Solution

The fourth proportional to 3,151.23, 4,726.85 and 842.73 is: 1,264.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.23 : 4,726.85 = 842.73 : x
  2. Step 2: Convert to fraction form
    3,151.23/4,726.85 = 842.73/x
  3. Step 3: Cross multiply
    3,151.23x = 4,726.85 × 842.73
  4. Step 4: Simplify right side
    3,151.23x = 3,983,454.09
  5. Step 5: Solve for x
    x = 3,983,454.09/3,151.23
  6. Step 6: Final answer
    x = 1,264.10

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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.