Home / 2,197.28-3,031.12-1,488.88

Finding the Fourth Proportional to 2,197.28, 3,031.12 and 1,488.88

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Solution

The fourth proportional to 2,197.28, 3,031.12 and 1,488.88 is: 2,053.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,197.28 : 3,031.12 = 1,488.88 : x
  2. Step 2: Convert to fraction form
    2,197.28/3,031.12 = 1,488.88/x
  3. Step 3: Cross multiply
    2,197.28x = 3,031.12 × 1,488.88
  4. Step 4: Simplify right side
    2,197.28x = 4,512,979.73
  5. Step 5: Solve for x
    x = 4,512,979.73/2,197.28
  6. Step 6: Final answer
    x = 2,053.89

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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.