Home / 3,911.39-5,867.09-1,316.15

Finding the Fourth Proportional to 3,911.39, 5,867.09 and 1,316.15

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Solution

The fourth proportional to 3,911.39, 5,867.09 and 1,316.15 is: 1,974.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.39 : 5,867.09 = 1,316.15 : x
  2. Step 2: Convert to fraction form
    3,911.39/5,867.09 = 1,316.15/x
  3. Step 3: Cross multiply
    3,911.39x = 5,867.09 × 1,316.15
  4. Step 4: Simplify right side
    3,911.39x = 7,721,988.46
  5. Step 5: Solve for x
    x = 7,721,988.46/3,911.39
  6. Step 6: Final answer
    x = 1,974.23

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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.