Home / 1,974.45-2,961.68-1,387.04

Finding the Fourth Proportional to 1,974.45, 2,961.68 and 1,387.04

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Solution

The fourth proportional to 1,974.45, 2,961.68 and 1,387.04 is: 2,080.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.45 : 2,961.68 = 1,387.04 : x
  2. Step 2: Convert to fraction form
    1,974.45/2,961.68 = 1,387.04/x
  3. Step 3: Cross multiply
    1,974.45x = 2,961.68 × 1,387.04
  4. Step 4: Simplify right side
    1,974.45x = 4,107,953.00
  5. Step 5: Solve for x
    x = 4,107,953.00/1,974.45
  6. Step 6: Final answer
    x = 2,080.55

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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.