Home / 7,115.09-10,680.15-3,997.76

Finding the Fourth Proportional to 7,115.09, 10,680.15 and 3,997.76

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Solution

The fourth proportional to 7,115.09, 10,680.15 and 3,997.76 is: 6,000.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.09 : 10,680.15 = 3,997.76 : x
  2. Step 2: Convert to fraction form
    7,115.09/10,680.15 = 3,997.76/x
  3. Step 3: Cross multiply
    7,115.09x = 10,680.15 × 3,997.76
  4. Step 4: Simplify right side
    7,115.09x = 42,696,676.46
  5. Step 5: Solve for x
    x = 42,696,676.46/7,115.09
  6. Step 6: Final answer
    x = 6,000.86

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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.