Home / 1,648.52-2,275.20-949.76

Finding the Fourth Proportional to 1,648.52, 2,275.20 and 949.76

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Solution

The fourth proportional to 1,648.52, 2,275.20 and 949.76 is: 1,310.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,648.52 : 2,275.20 = 949.76 : x
  2. Step 2: Convert to fraction form
    1,648.52/2,275.20 = 949.76/x
  3. Step 3: Cross multiply
    1,648.52x = 2,275.20 × 949.76
  4. Step 4: Simplify right side
    1,648.52x = 2,160,893.95
  5. Step 5: Solve for x
    x = 2,160,893.95/1,648.52
  6. Step 6: Final answer
    x = 1,310.81

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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.