Home / 2,879.90-4,320.12-1,236.14

Finding the Fourth Proportional to 2,879.90, 4,320.12 and 1,236.14

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Solution

The fourth proportional to 2,879.90, 4,320.12 and 1,236.14 is: 1,854.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.90 : 4,320.12 = 1,236.14 : x
  2. Step 2: Convert to fraction form
    2,879.90/4,320.12 = 1,236.14/x
  3. Step 3: Cross multiply
    2,879.90x = 4,320.12 × 1,236.14
  4. Step 4: Simplify right side
    2,879.90x = 5,340,273.14
  5. Step 5: Solve for x
    x = 5,340,273.14/2,879.90
  6. Step 6: Final answer
    x = 1,854.33

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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.