Home / 5,278.56-7,915.92-1,767.96

Finding the Fourth Proportional to 5,278.56, 7,915.92 and 1,767.96

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Solution

The fourth proportional to 5,278.56, 7,915.92 and 1,767.96 is: 2,651.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.56 : 7,915.92 = 1,767.96 : x
  2. Step 2: Convert to fraction form
    5,278.56/7,915.92 = 1,767.96/x
  3. Step 3: Cross multiply
    5,278.56x = 7,915.92 × 1,767.96
  4. Step 4: Simplify right side
    5,278.56x = 13,995,029.92
  5. Step 5: Solve for x
    x = 13,995,029.92/5,278.56
  6. Step 6: Final answer
    x = 2,651.30

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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.