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Finding the Fourth Proportional to 2,721.35, 4,082.63 and 773.57

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Solution

The fourth proportional to 2,721.35, 4,082.63 and 773.57 is: 1,160.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.35 : 4,082.63 = 773.57 : x
  2. Step 2: Convert to fraction form
    2,721.35/4,082.63 = 773.57/x
  3. Step 3: Cross multiply
    2,721.35x = 4,082.63 × 773.57
  4. Step 4: Simplify right side
    2,721.35x = 3,158,175.81
  5. Step 5: Solve for x
    x = 3,158,175.81/2,721.35
  6. Step 6: Final answer
    x = 1,160.52

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1.5x scale

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.