Home / 8,115.12-12,181.77-6,288.26

Finding the Fourth Proportional to 8,115.12, 12,181.77 and 6,288.26

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Solution

The fourth proportional to 8,115.12, 12,181.77 and 6,288.26 is: 9,439.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.12 : 12,181.77 = 6,288.26 : x
  2. Step 2: Convert to fraction form
    8,115.12/12,181.77 = 6,288.26/x
  3. Step 3: Cross multiply
    8,115.12x = 12,181.77 × 6,288.26
  4. Step 4: Simplify right side
    8,115.12x = 76,602,076.11
  5. Step 5: Solve for x
    x = 76,602,076.11/8,115.12
  6. Step 6: Final answer
    x = 9,439.43

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1.5x scale

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.