Home / 8,145.18-12,218.67-3,214.17

Finding the Fourth Proportional to 8,145.18, 12,218.67 and 3,214.17

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Solution

The fourth proportional to 8,145.18, 12,218.67 and 3,214.17 is: 4,821.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.18 : 12,218.67 = 3,214.17 : x
  2. Step 2: Convert to fraction form
    8,145.18/12,218.67 = 3,214.17/x
  3. Step 3: Cross multiply
    8,145.18x = 12,218.67 × 3,214.17
  4. Step 4: Simplify right side
    8,145.18x = 39,272,882.55
  5. Step 5: Solve for x
    x = 39,272,882.55/8,145.18
  6. Step 6: Final answer
    x = 4,821.61

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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.