Home / 5,178.67-7,146.62-2,940.59

Finding the Fourth Proportional to 5,178.67, 7,146.62 and 2,940.59

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Solution

The fourth proportional to 5,178.67, 7,146.62 and 2,940.59 is: 4,058.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.67 : 7,146.62 = 2,940.59 : x
  2. Step 2: Convert to fraction form
    5,178.67/7,146.62 = 2,940.59/x
  3. Step 3: Cross multiply
    5,178.67x = 7,146.62 × 2,940.59
  4. Step 4: Simplify right side
    5,178.67x = 21,015,297.27
  5. Step 5: Solve for x
    x = 21,015,297.27/5,178.67
  6. Step 6: Final answer
    x = 4,058.05

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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.