Home / 8,175.78-12,270.96-5,257.35

Finding the Fourth Proportional to 8,175.78, 12,270.96 and 5,257.35

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Solution

The fourth proportional to 8,175.78, 12,270.96 and 5,257.35 is: 7,890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,175.78 : 12,270.96 = 5,257.35 : x
  2. Step 2: Convert to fraction form
    8,175.78/12,270.96 = 5,257.35/x
  3. Step 3: Cross multiply
    8,175.78x = 12,270.96 × 5,257.35
  4. Step 4: Simplify right side
    8,175.78x = 64,512,731.56
  5. Step 5: Solve for x
    x = 64,512,731.56/8,175.78
  6. Step 6: Final answer
    x = 7,890.71

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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.