Home / 3,418.79-5,122.29-2,669.81

Finding the Fourth Proportional to 3,418.79, 5,122.29 and 2,669.81

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Solution

The fourth proportional to 3,418.79, 5,122.29 and 2,669.81 is: 4,000.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.79 : 5,122.29 = 2,669.81 : x
  2. Step 2: Convert to fraction form
    3,418.79/5,122.29 = 2,669.81/x
  3. Step 3: Cross multiply
    3,418.79x = 5,122.29 × 2,669.81
  4. Step 4: Simplify right side
    3,418.79x = 13,675,515.45
  5. Step 5: Solve for x
    x = 13,675,515.45/3,418.79
  6. Step 6: Final answer
    x = 4,000.11

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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.