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Finding the Fourth Proportional to 2,876.48, 3,972.03 and 2,728.85

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Solution

The fourth proportional to 2,876.48, 3,972.03 and 2,728.85 is: 3,768.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.48 : 3,972.03 = 2,728.85 : x
  2. Step 2: Convert to fraction form
    2,876.48/3,972.03 = 2,728.85/x
  3. Step 3: Cross multiply
    2,876.48x = 3,972.03 × 2,728.85
  4. Step 4: Simplify right side
    2,876.48x = 10,839,073.76
  5. Step 5: Solve for x
    x = 10,839,073.76/2,876.48
  6. Step 6: Final answer
    x = 3,768.18

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1.5x scale

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.