Home / 2,122.60-3,184.26-1,255

Finding the Fourth Proportional to 2,122.60, 3,184.26 and 1,255

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Solution

The fourth proportional to 2,122.60, 3,184.26 and 1,255 is: 1,882.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.60 : 3,184.26 = 1,255 : x
  2. Step 2: Convert to fraction form
    2,122.60/3,184.26 = 1,255/x
  3. Step 3: Cross multiply
    2,122.60x = 3,184.26 × 1,255
  4. Step 4: Simplify right side
    2,122.60x = 3,996,246.30
  5. Step 5: Solve for x
    x = 3,996,246.30/2,122.60
  6. Step 6: Final answer
    x = 1,882.71

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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.