Home / 3,960.52-5,465.12-2,191.88

Finding the Fourth Proportional to 3,960.52, 5,465.12 and 2,191.88

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Solution

The fourth proportional to 3,960.52, 5,465.12 and 2,191.88 is: 3,024.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.52 : 5,465.12 = 2,191.88 : x
  2. Step 2: Convert to fraction form
    3,960.52/5,465.12 = 2,191.88/x
  3. Step 3: Cross multiply
    3,960.52x = 5,465.12 × 2,191.88
  4. Step 4: Simplify right side
    3,960.52x = 11,978,887.23
  5. Step 5: Solve for x
    x = 11,978,887.23/3,960.52
  6. Step 6: Final answer
    x = 3,024.57

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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.