Home / 2,812.30-4,218.44-1,079.71

Finding the Fourth Proportional to 2,812.30, 4,218.44 and 1,079.71

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Solution

The fourth proportional to 2,812.30, 4,218.44 and 1,079.71 is: 1,619.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.30 : 4,218.44 = 1,079.71 : x
  2. Step 2: Convert to fraction form
    2,812.30/4,218.44 = 1,079.71/x
  3. Step 3: Cross multiply
    2,812.30x = 4,218.44 × 1,079.71
  4. Step 4: Simplify right side
    2,812.30x = 4,554,691.85
  5. Step 5: Solve for x
    x = 4,554,691.85/2,812.30
  6. Step 6: Final answer
    x = 1,619.56

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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.