Home / 2,717.78-4,077.36-1,257.98

Finding the Fourth Proportional to 2,717.78, 4,077.36 and 1,257.98

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Solution

The fourth proportional to 2,717.78, 4,077.36 and 1,257.98 is: 1,887.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.78 : 4,077.36 = 1,257.98 : x
  2. Step 2: Convert to fraction form
    2,717.78/4,077.36 = 1,257.98/x
  3. Step 3: Cross multiply
    2,717.78x = 4,077.36 × 1,257.98
  4. Step 4: Simplify right side
    2,717.78x = 5,129,237.33
  5. Step 5: Solve for x
    x = 5,129,237.33/2,717.78
  6. Step 6: Final answer
    x = 1,887.29

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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.