Home / 2,638.51-3,960.16-1,079.60

Finding the Fourth Proportional to 2,638.51, 3,960.16 and 1,079.60

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Solution

The fourth proportional to 2,638.51, 3,960.16 and 1,079.60 is: 1,620.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.51 : 3,960.16 = 1,079.60 : x
  2. Step 2: Convert to fraction form
    2,638.51/3,960.16 = 1,079.60/x
  3. Step 3: Cross multiply
    2,638.51x = 3,960.16 × 1,079.60
  4. Step 4: Simplify right side
    2,638.51x = 4,275,366.24
  5. Step 5: Solve for x
    x = 4,275,366.24/2,638.51
  6. Step 6: Final answer
    x = 1,620.37

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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.