Home / 3,911.38-5,867.34-1,138.06

Finding the Fourth Proportional to 3,911.38, 5,867.34 and 1,138.06

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Solution

The fourth proportional to 3,911.38, 5,867.34 and 1,138.06 is: 1,707.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.38 : 5,867.34 = 1,138.06 : x
  2. Step 2: Convert to fraction form
    3,911.38/5,867.34 = 1,138.06/x
  3. Step 3: Cross multiply
    3,911.38x = 5,867.34 × 1,138.06
  4. Step 4: Simplify right side
    3,911.38x = 6,677,384.96
  5. Step 5: Solve for x
    x = 6,677,384.96/3,911.38
  6. Step 6: Final answer
    x = 1,707.17

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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.