Home / 3,979.85-5,969.36-1,058.45

Finding the Fourth Proportional to 3,979.85, 5,969.36 and 1,058.45

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Solution

The fourth proportional to 3,979.85, 5,969.36 and 1,058.45 is: 1,587.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.85 : 5,969.36 = 1,058.45 : x
  2. Step 2: Convert to fraction form
    3,979.85/5,969.36 = 1,058.45/x
  3. Step 3: Cross multiply
    3,979.85x = 5,969.36 × 1,058.45
  4. Step 4: Simplify right side
    3,979.85x = 6,318,241.89
  5. Step 5: Solve for x
    x = 6,318,241.89/3,979.85
  6. Step 6: Final answer
    x = 1,587.56

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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.