Home / 8,271.97-12,379.35-5,108.11

Finding the Fourth Proportional to 8,271.97, 12,379.35 and 5,108.11

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Solution

The fourth proportional to 8,271.97, 12,379.35 and 5,108.11 is: 7,644.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271.97 : 12,379.35 = 5,108.11 : x
  2. Step 2: Convert to fraction form
    8,271.97/12,379.35 = 5,108.11/x
  3. Step 3: Cross multiply
    8,271.97x = 12,379.35 × 5,108.11
  4. Step 4: Simplify right side
    8,271.97x = 63,235,081.53
  5. Step 5: Solve for x
    x = 63,235,081.53/8,271.97
  6. Step 6: Final answer
    x = 7,644.50

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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.