Home / 2,392.13-3,589.28-1,221.53

Finding the Fourth Proportional to 2,392.13, 3,589.28 and 1,221.53

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Solution

The fourth proportional to 2,392.13, 3,589.28 and 1,221.53 is: 1,832.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,392.13 : 3,589.28 = 1,221.53 : x
  2. Step 2: Convert to fraction form
    2,392.13/3,589.28 = 1,221.53/x
  3. Step 3: Cross multiply
    2,392.13x = 3,589.28 × 1,221.53
  4. Step 4: Simplify right side
    2,392.13x = 4,384,413.20
  5. Step 5: Solve for x
    x = 4,384,413.20/2,392.13
  6. Step 6: Final answer
    x = 1,832.85

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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.