Home / 2,774.28-4,160.27-1,129.71

Finding the Fourth Proportional to 2,774.28, 4,160.27 and 1,129.71

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Solution

The fourth proportional to 2,774.28, 4,160.27 and 1,129.71 is: 1,694.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.28 : 4,160.27 = 1,129.71 : x
  2. Step 2: Convert to fraction form
    2,774.28/4,160.27 = 1,129.71/x
  3. Step 3: Cross multiply
    2,774.28x = 4,160.27 × 1,129.71
  4. Step 4: Simplify right side
    2,774.28x = 4,699,892.97
  5. Step 5: Solve for x
    x = 4,699,892.97/2,774.28
  6. Step 6: Final answer
    x = 1,694.09

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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.