Home / 8,179.92-12,271.69-2,985.79

Finding the Fourth Proportional to 8,179.92, 12,271.69 and 2,985.79

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Solution

The fourth proportional to 8,179.92, 12,271.69 and 2,985.79 is: 4,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,179.92 : 12,271.69 = 2,985.79 : x
  2. Step 2: Convert to fraction form
    8,179.92/12,271.69 = 2,985.79/x
  3. Step 3: Cross multiply
    8,179.92x = 12,271.69 × 2,985.79
  4. Step 4: Simplify right side
    8,179.92x = 36,640,689.29
  5. Step 5: Solve for x
    x = 36,640,689.29/8,179.92
  6. Step 6: Final answer
    x = 4,479.35

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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.