Home / 3,123.28-4,309.96-1,726

Finding the Fourth Proportional to 3,123.28, 4,309.96 and 1,726

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Solution

The fourth proportional to 3,123.28, 4,309.96 and 1,726 is: 2,381.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.28 : 4,309.96 = 1,726 : x
  2. Step 2: Convert to fraction form
    3,123.28/4,309.96 = 1,726/x
  3. Step 3: Cross multiply
    3,123.28x = 4,309.96 × 1,726
  4. Step 4: Simplify right side
    3,123.28x = 7,438,990.96
  5. Step 5: Solve for x
    x = 7,438,990.96/3,123.28
  6. Step 6: Final answer
    x = 2,381.79

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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.