Home / 1,650.30-2,279.28-1,281.72

Finding the Fourth Proportional to 1,650.30, 2,279.28 and 1,281.72

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Solution

The fourth proportional to 1,650.30, 2,279.28 and 1,281.72 is: 1,770.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,650.30 : 2,279.28 = 1,281.72 : x
  2. Step 2: Convert to fraction form
    1,650.30/2,279.28 = 1,281.72/x
  3. Step 3: Cross multiply
    1,650.30x = 2,279.28 × 1,281.72
  4. Step 4: Simplify right side
    1,650.30x = 2,921,398.76
  5. Step 5: Solve for x
    x = 2,921,398.76/1,650.30
  6. Step 6: Final answer
    x = 1,770.22

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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.