Home / 3,934.81-5,905.86-1,988.38

Finding the Fourth Proportional to 3,934.81, 5,905.86 and 1,988.38

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Solution

The fourth proportional to 3,934.81, 5,905.86 and 1,988.38 is: 2,984.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.81 : 5,905.86 = 1,988.38 : x
  2. Step 2: Convert to fraction form
    3,934.81/5,905.86 = 1,988.38/x
  3. Step 3: Cross multiply
    3,934.81x = 5,905.86 × 1,988.38
  4. Step 4: Simplify right side
    3,934.81x = 11,743,093.91
  5. Step 5: Solve for x
    x = 11,743,093.91/3,934.81
  6. Step 6: Final answer
    x = 2,984.41

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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.