Home / 8,118.66-12,179.81-2,572.35

Finding the Fourth Proportional to 8,118.66, 12,179.81 and 2,572.35

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Solution

The fourth proportional to 8,118.66, 12,179.81 and 2,572.35 is: 3,859.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.66 : 12,179.81 = 2,572.35 : x
  2. Step 2: Convert to fraction form
    8,118.66/12,179.81 = 2,572.35/x
  3. Step 3: Cross multiply
    8,118.66x = 12,179.81 × 2,572.35
  4. Step 4: Simplify right side
    8,118.66x = 31,330,734.25
  5. Step 5: Solve for x
    x = 31,330,734.25/8,118.66
  6. Step 6: Final answer
    x = 3,859.10

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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.