Home / 1,320.52-1,974.95-1,175.30

Finding the Fourth Proportional to 1,320.52, 1,974.95 and 1,175.30

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Solution

The fourth proportional to 1,320.52, 1,974.95 and 1,175.30 is: 1,757.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320.52 : 1,974.95 = 1,175.30 : x
  2. Step 2: Convert to fraction form
    1,320.52/1,974.95 = 1,175.30/x
  3. Step 3: Cross multiply
    1,320.52x = 1,974.95 × 1,175.30
  4. Step 4: Simplify right side
    1,320.52x = 2,321,158.74
  5. Step 5: Solve for x
    x = 2,321,158.74/1,320.52
  6. Step 6: Final answer
    x = 1,757.76

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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.