Home / 3,971.21-5,469.18-3,885.12

Finding the Fourth Proportional to 3,971.21, 5,469.18 and 3,885.12

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Solution

The fourth proportional to 3,971.21, 5,469.18 and 3,885.12 is: 5,350.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.21 : 5,469.18 = 3,885.12 : x
  2. Step 2: Convert to fraction form
    3,971.21/5,469.18 = 3,885.12/x
  3. Step 3: Cross multiply
    3,971.21x = 5,469.18 × 3,885.12
  4. Step 4: Simplify right side
    3,971.21x = 21,248,385.52
  5. Step 5: Solve for x
    x = 21,248,385.52/3,971.21
  6. Step 6: Final answer
    x = 5,350.60

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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.