Home / 3,123.14-4,309.92-1,725.90

Finding the Fourth Proportional to 3,123.14, 4,309.92 and 1,725.90

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Solution

The fourth proportional to 3,123.14, 4,309.92 and 1,725.90 is: 2,381.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.14 : 4,309.92 = 1,725.90 : x
  2. Step 2: Convert to fraction form
    3,123.14/4,309.92 = 1,725.90/x
  3. Step 3: Cross multiply
    3,123.14x = 4,309.92 × 1,725.90
  4. Step 4: Simplify right side
    3,123.14x = 7,438,490.93
  5. Step 5: Solve for x
    x = 7,438,490.93/3,123.14
  6. Step 6: Final answer
    x = 2,381.73

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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.