Home / 8,661.12-12,990.60-3,467.04

Finding the Fourth Proportional to 8,661.12, 12,990.60 and 3,467.04

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Solution

The fourth proportional to 8,661.12, 12,990.60 and 3,467.04 is: 5,200.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.12 : 12,990.60 = 3,467.04 : x
  2. Step 2: Convert to fraction form
    8,661.12/12,990.60 = 3,467.04/x
  3. Step 3: Cross multiply
    8,661.12x = 12,990.60 × 3,467.04
  4. Step 4: Simplify right side
    8,661.12x = 45,038,929.82
  5. Step 5: Solve for x
    x = 45,038,929.82/8,661.12
  6. Step 6: Final answer
    x = 5,200.13

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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.