Home / 8,156.31-12,236.30-2,609.99

Finding the Fourth Proportional to 8,156.31, 12,236.30 and 2,609.99

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Solution

The fourth proportional to 8,156.31, 12,236.30 and 2,609.99 is: 3,915.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.31 : 12,236.30 = 2,609.99 : x
  2. Step 2: Convert to fraction form
    8,156.31/12,236.30 = 2,609.99/x
  3. Step 3: Cross multiply
    8,156.31x = 12,236.30 × 2,609.99
  4. Step 4: Simplify right side
    8,156.31x = 31,936,626.71
  5. Step 5: Solve for x
    x = 31,936,626.71/8,156.31
  6. Step 6: Final answer
    x = 3,915.57

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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.