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Finding the Fourth Proportional to 1,976.68, 2,728.25 and 1,348.71

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Solution

The fourth proportional to 1,976.68, 2,728.25 and 1,348.71 is: 1,861.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.68 : 2,728.25 = 1,348.71 : x
  2. Step 2: Convert to fraction form
    1,976.68/2,728.25 = 1,348.71/x
  3. Step 3: Cross multiply
    1,976.68x = 2,728.25 × 1,348.71
  4. Step 4: Simplify right side
    1,976.68x = 3,679,618.06
  5. Step 5: Solve for x
    x = 3,679,618.06/1,976.68
  6. Step 6: Final answer
    x = 1,861.51

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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.