Home / 5,874.38-8,106.50-3,221.78

Finding the Fourth Proportional to 5,874.38, 8,106.50 and 3,221.78

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Solution

The fourth proportional to 5,874.38, 8,106.50 and 3,221.78 is: 4,445.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,874.38 : 8,106.50 = 3,221.78 : x
  2. Step 2: Convert to fraction form
    5,874.38/8,106.50 = 3,221.78/x
  3. Step 3: Cross multiply
    5,874.38x = 8,106.50 × 3,221.78
  4. Step 4: Simplify right side
    5,874.38x = 26,117,359.57
  5. Step 5: Solve for x
    x = 26,117,359.57/5,874.38
  6. Step 6: Final answer
    x = 4,445.98

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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.