Home / 8,239.67-12,359.40-1,999.74

Finding the Fourth Proportional to 8,239.67, 12,359.40 and 1,999.74

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Solution

The fourth proportional to 8,239.67, 12,359.40 and 1,999.74 is: 2,999.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.67 : 12,359.40 = 1,999.74 : x
  2. Step 2: Convert to fraction form
    8,239.67/12,359.40 = 1,999.74/x
  3. Step 3: Cross multiply
    8,239.67x = 12,359.40 × 1,999.74
  4. Step 4: Simplify right side
    8,239.67x = 24,715,586.56
  5. Step 5: Solve for x
    x = 24,715,586.56/8,239.67
  6. Step 6: Final answer
    x = 2,999.59

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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.