Home / 2,170.53-3,255.51-1,129.95

Finding the Fourth Proportional to 2,170.53, 3,255.51 and 1,129.95

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Solution

The fourth proportional to 2,170.53, 3,255.51 and 1,129.95 is: 1,694.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.53 : 3,255.51 = 1,129.95 : x
  2. Step 2: Convert to fraction form
    2,170.53/3,255.51 = 1,129.95/x
  3. Step 3: Cross multiply
    2,170.53x = 3,255.51 × 1,129.95
  4. Step 4: Simplify right side
    2,170.53x = 3,678,563.52
  5. Step 5: Solve for x
    x = 3,678,563.52/2,170.53
  6. Step 6: Final answer
    x = 1,694.78

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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.