Home / 8,151.12-12,218.47-3,218.85

Finding the Fourth Proportional to 8,151.12, 12,218.47 and 3,218.85

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Solution

The fourth proportional to 8,151.12, 12,218.47 and 3,218.85 is: 4,825.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.12 : 12,218.47 = 3,218.85 : x
  2. Step 2: Convert to fraction form
    8,151.12/12,218.47 = 3,218.85/x
  3. Step 3: Cross multiply
    8,151.12x = 12,218.47 × 3,218.85
  4. Step 4: Simplify right side
    8,151.12x = 39,329,422.16
  5. Step 5: Solve for x
    x = 39,329,422.16/8,151.12
  6. Step 6: Final answer
    x = 4,825.03

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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.