Home / 3,390.13-5,079.99-2,153.75

Finding the Fourth Proportional to 3,390.13, 5,079.99 and 2,153.75

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Solution

The fourth proportional to 3,390.13, 5,079.99 and 2,153.75 is: 3,227.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.13 : 5,079.99 = 2,153.75 : x
  2. Step 2: Convert to fraction form
    3,390.13/5,079.99 = 2,153.75/x
  3. Step 3: Cross multiply
    3,390.13x = 5,079.99 × 2,153.75
  4. Step 4: Simplify right side
    3,390.13x = 10,941,028.46
  5. Step 5: Solve for x
    x = 10,941,028.46/3,390.13
  6. Step 6: Final answer
    x = 3,227.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.