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Finding the Fourth Proportional to 2,519, 3,777.78 and 1,058.48

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Solution

The fourth proportional to 2,519, 3,777.78 and 1,058.48 is: 1,587.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519 : 3,777.78 = 1,058.48 : x
  2. Step 2: Convert to fraction form
    2,519/3,777.78 = 1,058.48/x
  3. Step 3: Cross multiply
    2,519x = 3,777.78 × 1,058.48
  4. Step 4: Simplify right side
    2,519x = 3,998,704.57
  5. Step 5: Solve for x
    x = 3,998,704.57/2,519
  6. Step 6: Final answer
    x = 1,587.42

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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.