Home / 3,960.45-5,465.33-2,191.95

Finding the Fourth Proportional to 3,960.45, 5,465.33 and 2,191.95

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Solution

The fourth proportional to 3,960.45, 5,465.33 and 2,191.95 is: 3,024.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.45 : 5,465.33 = 2,191.95 : x
  2. Step 2: Convert to fraction form
    3,960.45/5,465.33 = 2,191.95/x
  3. Step 3: Cross multiply
    3,960.45x = 5,465.33 × 2,191.95
  4. Step 4: Simplify right side
    3,960.45x = 11,979,708.25
  5. Step 5: Solve for x
    x = 11,979,708.25/3,960.45
  6. Step 6: Final answer
    x = 3,024.84

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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.