Home / 1,995.20-2,753.28-1,286.24

Finding the Fourth Proportional to 1,995.20, 2,753.28 and 1,286.24

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Solution

The fourth proportional to 1,995.20, 2,753.28 and 1,286.24 is: 1,774.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.20 : 2,753.28 = 1,286.24 : x
  2. Step 2: Convert to fraction form
    1,995.20/2,753.28 = 1,286.24/x
  3. Step 3: Cross multiply
    1,995.20x = 2,753.28 × 1,286.24
  4. Step 4: Simplify right side
    1,995.20x = 3,541,378.87
  5. Step 5: Solve for x
    x = 3,541,378.87/1,995.20
  6. Step 6: Final answer
    x = 1,774.95

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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.