Home / 2,721.50-4,082.79-1,161.50

Finding the Fourth Proportional to 2,721.50, 4,082.79 and 1,161.50

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Solution

The fourth proportional to 2,721.50, 4,082.79 and 1,161.50 is: 1,742.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.50 : 4,082.79 = 1,161.50 : x
  2. Step 2: Convert to fraction form
    2,721.50/4,082.79 = 1,161.50/x
  3. Step 3: Cross multiply
    2,721.50x = 4,082.79 × 1,161.50
  4. Step 4: Simplify right side
    2,721.50x = 4,742,160.59
  5. Step 5: Solve for x
    x = 4,742,160.59/2,721.50
  6. Step 6: Final answer
    x = 1,742.48

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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.