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Finding the Fourth Proportional to 2,769.40, 4,132.40 and 2,753.20

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Solution

The fourth proportional to 2,769.40, 4,132.40 and 2,753.20 is: 4,108.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.40 : 4,132.40 = 2,753.20 : x
  2. Step 2: Convert to fraction form
    2,769.40/4,132.40 = 2,753.20/x
  3. Step 3: Cross multiply
    2,769.40x = 4,132.40 × 2,753.20
  4. Step 4: Simplify right side
    2,769.40x = 11,377,323.68
  5. Step 5: Solve for x
    x = 11,377,323.68/2,769.40
  6. Step 6: Final answer
    x = 4,108.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.