Home / 2,789.28-4,182.12-1,471.68

Finding the Fourth Proportional to 2,789.28, 4,182.12 and 1,471.68

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Solution

The fourth proportional to 2,789.28, 4,182.12 and 1,471.68 is: 2,206.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.28 : 4,182.12 = 1,471.68 : x
  2. Step 2: Convert to fraction form
    2,789.28/4,182.12 = 1,471.68/x
  3. Step 3: Cross multiply
    2,789.28x = 4,182.12 × 1,471.68
  4. Step 4: Simplify right side
    2,789.28x = 6,154,742.36
  5. Step 5: Solve for x
    x = 6,154,742.36/2,789.28
  6. Step 6: Final answer
    x = 2,206.57

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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.