Home / 8,382.18-12,579.32-3,117.93

Finding the Fourth Proportional to 8,382.18, 12,579.32 and 3,117.93

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Solution

The fourth proportional to 8,382.18, 12,579.32 and 3,117.93 is: 4,679.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,382.18 : 12,579.32 = 3,117.93 : x
  2. Step 2: Convert to fraction form
    8,382.18/12,579.32 = 3,117.93/x
  3. Step 3: Cross multiply
    8,382.18x = 12,579.32 × 3,117.93
  4. Step 4: Simplify right side
    8,382.18x = 39,221,439.21
  5. Step 5: Solve for x
    x = 39,221,439.21/8,382.18
  6. Step 6: Final answer
    x = 4,679.15

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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.