Home / 6,912.76-10,360.92-3,985

Finding the Fourth Proportional to 6,912.76, 10,360.92 and 3,985

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Solution

The fourth proportional to 6,912.76, 10,360.92 and 3,985 is: 5,972.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.76 : 10,360.92 = 3,985 : x
  2. Step 2: Convert to fraction form
    6,912.76/10,360.92 = 3,985/x
  3. Step 3: Cross multiply
    6,912.76x = 10,360.92 × 3,985
  4. Step 4: Simplify right side
    6,912.76x = 41,288,266.20
  5. Step 5: Solve for x
    x = 41,288,266.20/6,912.76
  6. Step 6: Final answer
    x = 5,972.76

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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.