Home / 3,960.19-5,465.34-2,191.76

Finding the Fourth Proportional to 3,960.19, 5,465.34 and 2,191.76

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Solution

The fourth proportional to 3,960.19, 5,465.34 and 2,191.76 is: 3,024.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.19 : 5,465.34 = 2,191.76 : x
  2. Step 2: Convert to fraction form
    3,960.19/5,465.34 = 2,191.76/x
  3. Step 3: Cross multiply
    3,960.19x = 5,465.34 × 2,191.76
  4. Step 4: Simplify right side
    3,960.19x = 11,978,706.77
  5. Step 5: Solve for x
    x = 11,978,706.77/3,960.19
  6. Step 6: Final answer
    x = 3,024.78

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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.