Home / 5,414.40-8,121.60-3,851.10

Finding the Fourth Proportional to 5,414.40, 8,121.60 and 3,851.10

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Solution

The fourth proportional to 5,414.40, 8,121.60 and 3,851.10 is: 5,776.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.40 : 8,121.60 = 3,851.10 : x
  2. Step 2: Convert to fraction form
    5,414.40/8,121.60 = 3,851.10/x
  3. Step 3: Cross multiply
    5,414.40x = 8,121.60 × 3,851.10
  4. Step 4: Simplify right side
    5,414.40x = 31,277,093.76
  5. Step 5: Solve for x
    x = 31,277,093.76/5,414.40
  6. Step 6: Final answer
    x = 5,776.65

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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.