Home / 2,058.81-3,087.19-1,279.79

Finding the Fourth Proportional to 2,058.81, 3,087.19 and 1,279.79

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Solution

The fourth proportional to 2,058.81, 3,087.19 and 1,279.79 is: 1,919.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,058.81 : 3,087.19 = 1,279.79 : x
  2. Step 2: Convert to fraction form
    2,058.81/3,087.19 = 1,279.79/x
  3. Step 3: Cross multiply
    2,058.81x = 3,087.19 × 1,279.79
  4. Step 4: Simplify right side
    2,058.81x = 3,950,954.89
  5. Step 5: Solve for x
    x = 3,950,954.89/2,058.81
  6. Step 6: Final answer
    x = 1,919.05

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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.