Home / 2,721.40-4,082.52-1,161.40

Finding the Fourth Proportional to 2,721.40, 4,082.52 and 1,161.40

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Solution

The fourth proportional to 2,721.40, 4,082.52 and 1,161.40 is: 1,742.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.40 : 4,082.52 = 1,161.40 : x
  2. Step 2: Convert to fraction form
    2,721.40/4,082.52 = 1,161.40/x
  3. Step 3: Cross multiply
    2,721.40x = 4,082.52 × 1,161.40
  4. Step 4: Simplify right side
    2,721.40x = 4,741,438.73
  5. Step 5: Solve for x
    x = 4,741,438.73/2,721.40
  6. Step 6: Final answer
    x = 1,742.28

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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.