Home / 2,759.12-4,137.98-1,115.18

Finding the Fourth Proportional to 2,759.12, 4,137.98 and 1,115.18

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Solution

The fourth proportional to 2,759.12, 4,137.98 and 1,115.18 is: 1,672.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.12 : 4,137.98 = 1,115.18 : x
  2. Step 2: Convert to fraction form
    2,759.12/4,137.98 = 1,115.18/x
  3. Step 3: Cross multiply
    2,759.12x = 4,137.98 × 1,115.18
  4. Step 4: Simplify right side
    2,759.12x = 4,614,592.54
  5. Step 5: Solve for x
    x = 4,614,592.54/2,759.12
  6. Step 6: Final answer
    x = 1,672.49

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1.5x scale

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.