Home / 2,136.84-3,201.15-1,257.48

Finding the Fourth Proportional to 2,136.84, 3,201.15 and 1,257.48

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Solution

The fourth proportional to 2,136.84, 3,201.15 and 1,257.48 is: 1,883.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.84 : 3,201.15 = 1,257.48 : x
  2. Step 2: Convert to fraction form
    2,136.84/3,201.15 = 1,257.48/x
  3. Step 3: Cross multiply
    2,136.84x = 3,201.15 × 1,257.48
  4. Step 4: Simplify right side
    2,136.84x = 4,025,386.82
  5. Step 5: Solve for x
    x = 4,025,386.82/2,136.84
  6. Step 6: Final answer
    x = 1,883.81

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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.