Home / 2,221.26-3,332.32-1,398.55

Finding the Fourth Proportional to 2,221.26, 3,332.32 and 1,398.55

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Solution

The fourth proportional to 2,221.26, 3,332.32 and 1,398.55 is: 2,098.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.26 : 3,332.32 = 1,398.55 : x
  2. Step 2: Convert to fraction form
    2,221.26/3,332.32 = 1,398.55/x
  3. Step 3: Cross multiply
    2,221.26x = 3,332.32 × 1,398.55
  4. Step 4: Simplify right side
    2,221.26x = 4,660,416.14
  5. Step 5: Solve for x
    x = 4,660,416.14/2,221.26
  6. Step 6: Final answer
    x = 2,098.10

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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.