Home / 2,122.15-3,180.60-1,539.15

Finding the Fourth Proportional to 2,122.15, 3,180.60 and 1,539.15

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Solution

The fourth proportional to 2,122.15, 3,180.60 and 1,539.15 is: 2,306.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.15 : 3,180.60 = 1,539.15 : x
  2. Step 2: Convert to fraction form
    2,122.15/3,180.60 = 1,539.15/x
  3. Step 3: Cross multiply
    2,122.15x = 3,180.60 × 1,539.15
  4. Step 4: Simplify right side
    2,122.15x = 4,895,420.49
  5. Step 5: Solve for x
    x = 4,895,420.49/2,122.15
  6. Step 6: Final answer
    x = 2,306.82

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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.