Home / 2,664.84-3,997.90-1,277.78

Finding the Fourth Proportional to 2,664.84, 3,997.90 and 1,277.78

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Solution

The fourth proportional to 2,664.84, 3,997.90 and 1,277.78 is: 1,916.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,664.84 : 3,997.90 = 1,277.78 : x
  2. Step 2: Convert to fraction form
    2,664.84/3,997.90 = 1,277.78/x
  3. Step 3: Cross multiply
    2,664.84x = 3,997.90 × 1,277.78
  4. Step 4: Simplify right side
    2,664.84x = 5,108,436.66
  5. Step 5: Solve for x
    x = 5,108,436.66/2,664.84
  6. Step 6: Final answer
    x = 1,916.98

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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.