Home / 2,221.79-3,335.72-1,397.61

Finding the Fourth Proportional to 2,221.79, 3,335.72 and 1,397.61

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Solution

The fourth proportional to 2,221.79, 3,335.72 and 1,397.61 is: 2,098.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.79 : 3,335.72 = 1,397.61 : x
  2. Step 2: Convert to fraction form
    2,221.79/3,335.72 = 1,397.61/x
  3. Step 3: Cross multiply
    2,221.79x = 3,335.72 × 1,397.61
  4. Step 4: Simplify right side
    2,221.79x = 4,662,035.63
  5. Step 5: Solve for x
    x = 4,662,035.63/2,221.79
  6. Step 6: Final answer
    x = 2,098.32

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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.