Home / 8,145.38-12,218.21-3,214.98

Finding the Fourth Proportional to 8,145.38, 12,218.21 and 3,214.98

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Solution

The fourth proportional to 8,145.38, 12,218.21 and 3,214.98 is: 4,822.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.38 : 12,218.21 = 3,214.98 : x
  2. Step 2: Convert to fraction form
    8,145.38/12,218.21 = 3,214.98/x
  3. Step 3: Cross multiply
    8,145.38x = 12,218.21 × 3,214.98
  4. Step 4: Simplify right side
    8,145.38x = 39,281,284.71
  5. Step 5: Solve for x
    x = 39,281,284.71/8,145.38
  6. Step 6: Final answer
    x = 4,822.53

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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.