Home / 2,187.90-3,280.71-1,076.85

Finding the Fourth Proportional to 2,187.90, 3,280.71 and 1,076.85

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Solution

The fourth proportional to 2,187.90, 3,280.71 and 1,076.85 is: 1,614.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.90 : 3,280.71 = 1,076.85 : x
  2. Step 2: Convert to fraction form
    2,187.90/3,280.71 = 1,076.85/x
  3. Step 3: Cross multiply
    2,187.90x = 3,280.71 × 1,076.85
  4. Step 4: Simplify right side
    2,187.90x = 3,532,832.56
  5. Step 5: Solve for x
    x = 3,532,832.56/2,187.90
  6. Step 6: Final answer
    x = 1,614.71

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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.