Home / 5,115.50-7,676.16-2,775.56

Finding the Fourth Proportional to 5,115.50, 7,676.16 and 2,775.56

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Solution

The fourth proportional to 5,115.50, 7,676.16 and 2,775.56 is: 4,164.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.50 : 7,676.16 = 2,775.56 : x
  2. Step 2: Convert to fraction form
    5,115.50/7,676.16 = 2,775.56/x
  3. Step 3: Cross multiply
    5,115.50x = 7,676.16 × 2,775.56
  4. Step 4: Simplify right side
    5,115.50x = 21,305,642.65
  5. Step 5: Solve for x
    x = 21,305,642.65/5,115.50
  6. Step 6: Final answer
    x = 4,164.92

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1.5x scale

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.