Home / 3,781.20-5,663.70-3,133.20

Finding the Fourth Proportional to 3,781.20, 5,663.70 and 3,133.20

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Solution

The fourth proportional to 3,781.20, 5,663.70 and 3,133.20 is: 4,693.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.20 : 5,663.70 = 3,133.20 : x
  2. Step 2: Convert to fraction form
    3,781.20/5,663.70 = 3,133.20/x
  3. Step 3: Cross multiply
    3,781.20x = 5,663.70 × 3,133.20
  4. Step 4: Simplify right side
    3,781.20x = 17,745,504.84
  5. Step 5: Solve for x
    x = 17,745,504.84/3,781.20
  6. Step 6: Final answer
    x = 4,693.09

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1.5x scale

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.