Home / 4,123.95-5,691.45-2,355.81

Finding the Fourth Proportional to 4,123.95, 5,691.45 and 2,355.81

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Solution

The fourth proportional to 4,123.95, 5,691.45 and 2,355.81 is: 3,251.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,123.95 : 5,691.45 = 2,355.81 : x
  2. Step 2: Convert to fraction form
    4,123.95/5,691.45 = 2,355.81/x
  3. Step 3: Cross multiply
    4,123.95x = 5,691.45 × 2,355.81
  4. Step 4: Simplify right side
    4,123.95x = 13,407,974.82
  5. Step 5: Solve for x
    x = 13,407,974.82/4,123.95
  6. Step 6: Final answer
    x = 3,251.25

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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.