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Finding the Fourth Proportional to 3,098.88, 4,275.90 and 2,765.88

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Solution

The fourth proportional to 3,098.88, 4,275.90 and 2,765.88 is: 3,816.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,098.88 : 4,275.90 = 2,765.88 : x
  2. Step 2: Convert to fraction form
    3,098.88/4,275.90 = 2,765.88/x
  3. Step 3: Cross multiply
    3,098.88x = 4,275.90 × 2,765.88
  4. Step 4: Simplify right side
    3,098.88x = 11,826,626.29
  5. Step 5: Solve for x
    x = 11,826,626.29/3,098.88
  6. Step 6: Final answer
    x = 3,816.42

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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.