Home / 2,239.28-3,358.90-1,321.22

Finding the Fourth Proportional to 2,239.28, 3,358.90 and 1,321.22

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Solution

The fourth proportional to 2,239.28, 3,358.90 and 1,321.22 is: 1,981.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.28 : 3,358.90 = 1,321.22 : x
  2. Step 2: Convert to fraction form
    2,239.28/3,358.90 = 1,321.22/x
  3. Step 3: Cross multiply
    2,239.28x = 3,358.90 × 1,321.22
  4. Step 4: Simplify right side
    2,239.28x = 4,437,845.86
  5. Step 5: Solve for x
    x = 4,437,845.86/2,239.28
  6. Step 6: Final answer
    x = 1,981.82

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1.5x scale

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.