Home / 7,961.31-10,986.20-4,424.78

Finding the Fourth Proportional to 7,961.31, 10,986.20 and 4,424.78

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Solution

The fourth proportional to 7,961.31, 10,986.20 and 4,424.78 is: 6,105.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.31 : 10,986.20 = 4,424.78 : x
  2. Step 2: Convert to fraction form
    7,961.31/10,986.20 = 4,424.78/x
  3. Step 3: Cross multiply
    7,961.31x = 10,986.20 × 4,424.78
  4. Step 4: Simplify right side
    7,961.31x = 48,611,539.97
  5. Step 5: Solve for x
    x = 48,611,539.97/7,961.31
  6. Step 6: Final answer
    x = 6,105.97

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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.