Home / 1,982.36-2,974.20-1,251.08

Finding the Fourth Proportional to 1,982.36, 2,974.20 and 1,251.08

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Solution

The fourth proportional to 1,982.36, 2,974.20 and 1,251.08 is: 1,877.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.36 : 2,974.20 = 1,251.08 : x
  2. Step 2: Convert to fraction form
    1,982.36/2,974.20 = 1,251.08/x
  3. Step 3: Cross multiply
    1,982.36x = 2,974.20 × 1,251.08
  4. Step 4: Simplify right side
    1,982.36x = 3,720,962.14
  5. Step 5: Solve for x
    x = 3,720,962.14/1,982.36
  6. Step 6: Final answer
    x = 1,877.04

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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.