Home / 3,972.11-5,480.75-2,271.15

Finding the Fourth Proportional to 3,972.11, 5,480.75 and 2,271.15

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Solution

The fourth proportional to 3,972.11, 5,480.75 and 2,271.15 is: 3,133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.11 : 5,480.75 = 2,271.15 : x
  2. Step 2: Convert to fraction form
    3,972.11/5,480.75 = 2,271.15/x
  3. Step 3: Cross multiply
    3,972.11x = 5,480.75 × 2,271.15
  4. Step 4: Simplify right side
    3,972.11x = 12,447,594.01
  5. Step 5: Solve for x
    x = 12,447,594.01/3,972.11
  6. Step 6: Final answer
    x = 3,133.75

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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.