Home / 8,175.86-11,294.07-7,872.41

Finding the Fourth Proportional to 8,175.86, 11,294.07 and 7,872.41

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Solution

The fourth proportional to 8,175.86, 11,294.07 and 7,872.41 is: 10,874.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,175.86 : 11,294.07 = 7,872.41 : x
  2. Step 2: Convert to fraction form
    8,175.86/11,294.07 = 7,872.41/x
  3. Step 3: Cross multiply
    8,175.86x = 11,294.07 × 7,872.41
  4. Step 4: Simplify right side
    8,175.86x = 88,911,549.61
  5. Step 5: Solve for x
    x = 88,911,549.61/8,175.86
  6. Step 6: Final answer
    x = 10,874.89

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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.