Home / 3,972.92-5,481-2,380.05

Finding the Fourth Proportional to 3,972.92, 5,481 and 2,380.05

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Solution

The fourth proportional to 3,972.92, 5,481 and 2,380.05 is: 3,283.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.92 : 5,481 = 2,380.05 : x
  2. Step 2: Convert to fraction form
    3,972.92/5,481 = 2,380.05/x
  3. Step 3: Cross multiply
    3,972.92x = 5,481 × 2,380.05
  4. Step 4: Simplify right side
    3,972.92x = 13,045,054.05
  5. Step 5: Solve for x
    x = 13,045,054.05/3,972.92
  6. Step 6: Final answer
    x = 3,283.50

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Half scale
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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.