Home / 8,619.78-12,930.69-3,073.92

Finding the Fourth Proportional to 8,619.78, 12,930.69 and 3,073.92

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Solution

The fourth proportional to 8,619.78, 12,930.69 and 3,073.92 is: 4,611.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.78 : 12,930.69 = 3,073.92 : x
  2. Step 2: Convert to fraction form
    8,619.78/12,930.69 = 3,073.92/x
  3. Step 3: Cross multiply
    8,619.78x = 12,930.69 × 3,073.92
  4. Step 4: Simplify right side
    8,619.78x = 39,747,852.35
  5. Step 5: Solve for x
    x = 39,747,852.35/8,619.78
  6. Step 6: Final answer
    x = 4,611.24

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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.