Home / 2,876.30-3,969.07-1,757.78

Finding the Fourth Proportional to 2,876.30, 3,969.07 and 1,757.78

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Solution

The fourth proportional to 2,876.30, 3,969.07 and 1,757.78 is: 2,425.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.30 : 3,969.07 = 1,757.78 : x
  2. Step 2: Convert to fraction form
    2,876.30/3,969.07 = 1,757.78/x
  3. Step 3: Cross multiply
    2,876.30x = 3,969.07 × 1,757.78
  4. Step 4: Simplify right side
    2,876.30x = 6,976,751.86
  5. Step 5: Solve for x
    x = 6,976,751.86/2,876.30
  6. Step 6: Final answer
    x = 2,425.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.