Home / 8,146.30-12,221.60-3,214.74

Finding the Fourth Proportional to 8,146.30, 12,221.60 and 3,214.74

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Solution

The fourth proportional to 8,146.30, 12,221.60 and 3,214.74 is: 4,822.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,146.30 : 12,221.60 = 3,214.74 : x
  2. Step 2: Convert to fraction form
    8,146.30/12,221.60 = 3,214.74/x
  3. Step 3: Cross multiply
    8,146.30x = 12,221.60 × 3,214.74
  4. Step 4: Simplify right side
    8,146.30x = 39,289,266.38
  5. Step 5: Solve for x
    x = 39,289,266.38/8,146.30
  6. Step 6: Final answer
    x = 4,822.96

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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.