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Finding the Fourth Proportional to 3,058.68, 4,586.61 and 978.27

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Solution

The fourth proportional to 3,058.68, 4,586.61 and 978.27 is: 1,466.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,058.68 : 4,586.61 = 978.27 : x
  2. Step 2: Convert to fraction form
    3,058.68/4,586.61 = 978.27/x
  3. Step 3: Cross multiply
    3,058.68x = 4,586.61 × 978.27
  4. Step 4: Simplify right side
    3,058.68x = 4,486,942.96
  5. Step 5: Solve for x
    x = 4,486,942.96/3,058.68
  6. Step 6: Final answer
    x = 1,466.95

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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.