Home / 3,120-4,302.09-2,551.06

Finding the Fourth Proportional to 3,120, 4,302.09 and 2,551.06

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Solution

The fourth proportional to 3,120, 4,302.09 and 2,551.06 is: 3,517.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120 : 4,302.09 = 2,551.06 : x
  2. Step 2: Convert to fraction form
    3,120/4,302.09 = 2,551.06/x
  3. Step 3: Cross multiply
    3,120x = 4,302.09 × 2,551.06
  4. Step 4: Simplify right side
    3,120x = 10,974,889.72
  5. Step 5: Solve for x
    x = 10,974,889.72/3,120
  6. Step 6: Final answer
    x = 3,517.59

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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.