Home / 2,721.55-4,082.61-1,161.72

Finding the Fourth Proportional to 2,721.55, 4,082.61 and 1,161.72

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Solution

The fourth proportional to 2,721.55, 4,082.61 and 1,161.72 is: 1,742.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.55 : 4,082.61 = 1,161.72 : x
  2. Step 2: Convert to fraction form
    2,721.55/4,082.61 = 1,161.72/x
  3. Step 3: Cross multiply
    2,721.55x = 4,082.61 × 1,161.72
  4. Step 4: Simplify right side
    2,721.55x = 4,742,849.69
  5. Step 5: Solve for x
    x = 4,742,849.69/2,721.55
  6. Step 6: Final answer
    x = 1,742.70

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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.