Home / 5,178.62-7,146.96-2,940.60

Finding the Fourth Proportional to 5,178.62, 7,146.96 and 2,940.60

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Solution

The fourth proportional to 5,178.62, 7,146.96 and 2,940.60 is: 4,058.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.62 : 7,146.96 = 2,940.60 : x
  2. Step 2: Convert to fraction form
    5,178.62/7,146.96 = 2,940.60/x
  3. Step 3: Cross multiply
    5,178.62x = 7,146.96 × 2,940.60
  4. Step 4: Simplify right side
    5,178.62x = 21,016,350.58
  5. Step 5: Solve for x
    x = 21,016,350.58/5,178.62
  6. Step 6: Final answer
    x = 4,058.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.