Home / 8,122.12-11,198.10-6,661.52

Finding the Fourth Proportional to 8,122.12, 11,198.10 and 6,661.52

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Solution

The fourth proportional to 8,122.12, 11,198.10 and 6,661.52 is: 9,184.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.12 : 11,198.10 = 6,661.52 : x
  2. Step 2: Convert to fraction form
    8,122.12/11,198.10 = 6,661.52/x
  3. Step 3: Cross multiply
    8,122.12x = 11,198.10 × 6,661.52
  4. Step 4: Simplify right side
    8,122.12x = 74,596,367.11
  5. Step 5: Solve for x
    x = 74,596,367.11/8,122.12
  6. Step 6: Final answer
    x = 9,184.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.