Home / 5,178.04-7,143.82-2,938.62

Finding the Fourth Proportional to 5,178.04, 7,143.82 and 2,938.62

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Solution

The fourth proportional to 5,178.04, 7,143.82 and 2,938.62 is: 4,054.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.04 : 7,143.82 = 2,938.62 : x
  2. Step 2: Convert to fraction form
    5,178.04/7,143.82 = 2,938.62/x
  3. Step 3: Cross multiply
    5,178.04x = 7,143.82 × 2,938.62
  4. Step 4: Simplify right side
    5,178.04x = 20,992,972.33
  5. Step 5: Solve for x
    x = 20,992,972.33/5,178.04
  6. Step 6: Final answer
    x = 4,054.23

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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.