Home / 8,159.24-12,239.76-2,611.28

Finding the Fourth Proportional to 8,159.24, 12,239.76 and 2,611.28

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Solution

The fourth proportional to 8,159.24, 12,239.76 and 2,611.28 is: 3,917.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,159.24 : 12,239.76 = 2,611.28 : x
  2. Step 2: Convert to fraction form
    8,159.24/12,239.76 = 2,611.28/x
  3. Step 3: Cross multiply
    8,159.24x = 12,239.76 × 2,611.28
  4. Step 4: Simplify right side
    8,159.24x = 31,961,379.29
  5. Step 5: Solve for x
    x = 31,961,379.29/8,159.24
  6. Step 6: Final answer
    x = 3,917.20

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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.