Home / 8,079.13-12,116.80-3,146.77

Finding the Fourth Proportional to 8,079.13, 12,116.80 and 3,146.77

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Solution

The fourth proportional to 8,079.13, 12,116.80 and 3,146.77 is: 4,719.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.13 : 12,116.80 = 3,146.77 : x
  2. Step 2: Convert to fraction form
    8,079.13/12,116.80 = 3,146.77/x
  3. Step 3: Cross multiply
    8,079.13x = 12,116.80 × 3,146.77
  4. Step 4: Simplify right side
    8,079.13x = 38,128,782.74
  5. Step 5: Solve for x
    x = 38,128,782.74/8,079.13
  6. Step 6: Final answer
    x = 4,719.42

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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.