Home / 5,115.92-7,057.97-2,877.29

Finding the Fourth Proportional to 5,115.92, 7,057.97 and 2,877.29

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Solution

The fourth proportional to 5,115.92, 7,057.97 and 2,877.29 is: 3,969.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.92 : 7,057.97 = 2,877.29 : x
  2. Step 2: Convert to fraction form
    5,115.92/7,057.97 = 2,877.29/x
  3. Step 3: Cross multiply
    5,115.92x = 7,057.97 × 2,877.29
  4. Step 4: Simplify right side
    5,115.92x = 20,307,798.40
  5. Step 5: Solve for x
    x = 20,307,798.40/5,115.92
  6. Step 6: Final answer
    x = 3,969.53

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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.