Home / 7,119.88-10,680.15-3,170.45

Finding the Fourth Proportional to 7,119.88, 10,680.15 and 3,170.45

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Solution

The fourth proportional to 7,119.88, 10,680.15 and 3,170.45 is: 4,755.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.88 : 10,680.15 = 3,170.45 : x
  2. Step 2: Convert to fraction form
    7,119.88/10,680.15 = 3,170.45/x
  3. Step 3: Cross multiply
    7,119.88x = 10,680.15 × 3,170.45
  4. Step 4: Simplify right side
    7,119.88x = 33,860,920.16
  5. Step 5: Solve for x
    x = 33,860,920.16/7,119.88
  6. Step 6: Final answer
    x = 4,755.83

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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.