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Finding the Fourth Proportional to 3,982.80, 5,970.72 and 1,901.76

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Solution

The fourth proportional to 3,982.80, 5,970.72 and 1,901.76 is: 2,850.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.80 : 5,970.72 = 1,901.76 : x
  2. Step 2: Convert to fraction form
    3,982.80/5,970.72 = 1,901.76/x
  3. Step 3: Cross multiply
    3,982.80x = 5,970.72 × 1,901.76
  4. Step 4: Simplify right side
    3,982.80x = 11,354,876.47
  5. Step 5: Solve for x
    x = 11,354,876.47/3,982.80
  6. Step 6: Final answer
    x = 2,850.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.