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Finding the Fourth Proportional to 2,058.62, 3,086.91 and 652.86

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Solution

The fourth proportional to 2,058.62, 3,086.91 and 652.86 is: 978.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,058.62 : 3,086.91 = 652.86 : x
  2. Step 2: Convert to fraction form
    2,058.62/3,086.91 = 652.86/x
  3. Step 3: Cross multiply
    2,058.62x = 3,086.91 × 652.86
  4. Step 4: Simplify right side
    2,058.62x = 2,015,320.06
  5. Step 5: Solve for x
    x = 2,015,320.06/2,058.62
  6. Step 6: Final answer
    x = 978.97

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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.