Home / 5,115.44-7,059.16-2,877.28

Finding the Fourth Proportional to 5,115.44, 7,059.16 and 2,877.28

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Solution

The fourth proportional to 5,115.44, 7,059.16 and 2,877.28 is: 3,970.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.44 : 7,059.16 = 2,877.28 : x
  2. Step 2: Convert to fraction form
    5,115.44/7,059.16 = 2,877.28/x
  3. Step 3: Cross multiply
    5,115.44x = 7,059.16 × 2,877.28
  4. Step 4: Simplify right side
    5,115.44x = 20,311,179.88
  5. Step 5: Solve for x
    x = 20,311,179.88/5,115.44
  6. Step 6: Final answer
    x = 3,970.56

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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.