Home / 2,232.45-3,081.23-1,288.86

Finding the Fourth Proportional to 2,232.45, 3,081.23 and 1,288.86

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Solution

The fourth proportional to 2,232.45, 3,081.23 and 1,288.86 is: 1,778.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,232.45 : 3,081.23 = 1,288.86 : x
  2. Step 2: Convert to fraction form
    2,232.45/3,081.23 = 1,288.86/x
  3. Step 3: Cross multiply
    2,232.45x = 3,081.23 × 1,288.86
  4. Step 4: Simplify right side
    2,232.45x = 3,971,267.65
  5. Step 5: Solve for x
    x = 3,971,267.65/2,232.45
  6. Step 6: Final answer
    x = 1,778.88

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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.