Home / 1,539.20-2,122.98-949.52

Finding the Fourth Proportional to 1,539.20, 2,122.98 and 949.52

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Solution

The fourth proportional to 1,539.20, 2,122.98 and 949.52 is: 1,309.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.20 : 2,122.98 = 949.52 : x
  2. Step 2: Convert to fraction form
    1,539.20/2,122.98 = 949.52/x
  3. Step 3: Cross multiply
    1,539.20x = 2,122.98 × 949.52
  4. Step 4: Simplify right side
    1,539.20x = 2,015,811.97
  5. Step 5: Solve for x
    x = 2,015,811.97/1,539.20
  6. Step 6: Final answer
    x = 1,309.65

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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.