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Finding the Fourth Proportional to 3,488.46, 4,809.42 and 2,988.96

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Solution

The fourth proportional to 3,488.46, 4,809.42 and 2,988.96 is: 4,120.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.46 : 4,809.42 = 2,988.96 : x
  2. Step 2: Convert to fraction form
    3,488.46/4,809.42 = 2,988.96/x
  3. Step 3: Cross multiply
    3,488.46x = 4,809.42 × 2,988.96
  4. Step 4: Simplify right side
    3,488.46x = 14,375,164.00
  5. Step 5: Solve for x
    x = 14,375,164.00/3,488.46
  6. Step 6: Final answer
    x = 4,120.78

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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.