Home / 2,638.50-3,957.21-1,339.26

Finding the Fourth Proportional to 2,638.50, 3,957.21 and 1,339.26

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Solution

The fourth proportional to 2,638.50, 3,957.21 and 1,339.26 is: 2,008.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.50 : 3,957.21 = 1,339.26 : x
  2. Step 2: Convert to fraction form
    2,638.50/3,957.21 = 1,339.26/x
  3. Step 3: Cross multiply
    2,638.50x = 3,957.21 × 1,339.26
  4. Step 4: Simplify right side
    2,638.50x = 5,299,733.06
  5. Step 5: Solve for x
    x = 5,299,733.06/2,638.50
  6. Step 6: Final answer
    x = 2,008.62

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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.