Home / 8,051.40-12,079.26-7,919.37

Finding the Fourth Proportional to 8,051.40, 12,079.26 and 7,919.37

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Solution

The fourth proportional to 8,051.40, 12,079.26 and 7,919.37 is: 11,881.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,051.40 : 12,079.26 = 7,919.37 : x
  2. Step 2: Convert to fraction form
    8,051.40/12,079.26 = 7,919.37/x
  3. Step 3: Cross multiply
    8,051.40x = 12,079.26 × 7,919.37
  4. Step 4: Simplify right side
    8,051.40x = 95,660,129.27
  5. Step 5: Solve for x
    x = 95,660,129.27/8,051.40
  6. Step 6: Final answer
    x = 11,881.18

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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.