Home / 5,115.54-7,057.74-2,876.94

Finding the Fourth Proportional to 5,115.54, 7,057.74 and 2,876.94

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Solution

The fourth proportional to 5,115.54, 7,057.74 and 2,876.94 is: 3,969.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.54 : 7,057.74 = 2,876.94 : x
  2. Step 2: Convert to fraction form
    5,115.54/7,057.74 = 2,876.94/x
  3. Step 3: Cross multiply
    5,115.54x = 7,057.74 × 2,876.94
  4. Step 4: Simplify right side
    5,115.54x = 20,304,694.52
  5. Step 5: Solve for x
    x = 20,304,694.52/5,115.54
  6. Step 6: Final answer
    x = 3,969.22

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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.