Home / 2,854.20-4,278.87-1,209.90

Finding the Fourth Proportional to 2,854.20, 4,278.87 and 1,209.90

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Solution

The fourth proportional to 2,854.20, 4,278.87 and 1,209.90 is: 1,813.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.20 : 4,278.87 = 1,209.90 : x
  2. Step 2: Convert to fraction form
    2,854.20/4,278.87 = 1,209.90/x
  3. Step 3: Cross multiply
    2,854.20x = 4,278.87 × 1,209.90
  4. Step 4: Simplify right side
    2,854.20x = 5,177,004.81
  5. Step 5: Solve for x
    x = 5,177,004.81/2,854.20
  6. Step 6: Final answer
    x = 1,813.82

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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.