Home / 8,111.64-12,159.66-4,162.92

Finding the Fourth Proportional to 8,111.64, 12,159.66 and 4,162.92

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Solution

The fourth proportional to 8,111.64, 12,159.66 and 4,162.92 is: 6,240.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.64 : 12,159.66 = 4,162.92 : x
  2. Step 2: Convert to fraction form
    8,111.64/12,159.66 = 4,162.92/x
  3. Step 3: Cross multiply
    8,111.64x = 12,159.66 × 4,162.92
  4. Step 4: Simplify right side
    8,111.64x = 50,619,691.81
  5. Step 5: Solve for x
    x = 50,619,691.81/8,111.64
  6. Step 6: Final answer
    x = 6,240.38

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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.