Home / 2,232.20-3,079.88-1,288.28

Finding the Fourth Proportional to 2,232.20, 3,079.88 and 1,288.28

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Solution

The fourth proportional to 2,232.20, 3,079.88 and 1,288.28 is: 1,777.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,232.20 : 3,079.88 = 1,288.28 : x
  2. Step 2: Convert to fraction form
    2,232.20/3,079.88 = 1,288.28/x
  3. Step 3: Cross multiply
    2,232.20x = 3,079.88 × 1,288.28
  4. Step 4: Simplify right side
    2,232.20x = 3,967,747.81
  5. Step 5: Solve for x
    x = 3,967,747.81/2,232.20
  6. Step 6: Final answer
    x = 1,777.51

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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.