Home / 3,960.12-5,464.90-2,191.70

Finding the Fourth Proportional to 3,960.12, 5,464.90 and 2,191.70

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Solution

The fourth proportional to 3,960.12, 5,464.90 and 2,191.70 is: 3,024.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.12 : 5,464.90 = 2,191.70 : x
  2. Step 2: Convert to fraction form
    3,960.12/5,464.90 = 2,191.70/x
  3. Step 3: Cross multiply
    3,960.12x = 5,464.90 × 2,191.70
  4. Step 4: Simplify right side
    3,960.12x = 11,977,421.33
  5. Step 5: Solve for x
    x = 11,977,421.33/3,960.12
  6. Step 6: Final answer
    x = 3,024.51

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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.