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Finding the Fourth Proportional to 2,808.80, 3,876.92 and 1,630.25

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Solution

The fourth proportional to 2,808.80, 3,876.92 and 1,630.25 is: 2,250.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.80 : 3,876.92 = 1,630.25 : x
  2. Step 2: Convert to fraction form
    2,808.80/3,876.92 = 1,630.25/x
  3. Step 3: Cross multiply
    2,808.80x = 3,876.92 × 1,630.25
  4. Step 4: Simplify right side
    2,808.80x = 6,320,340.68
  5. Step 5: Solve for x
    x = 6,320,340.68/2,808.80
  6. Step 6: Final answer
    x = 2,250.19

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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.