Home / 6,918.17-10,375.13-1,986.49

Finding the Fourth Proportional to 6,918.17, 10,375.13 and 1,986.49

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Solution

The fourth proportional to 6,918.17, 10,375.13 and 1,986.49 is: 2,979.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.17 : 10,375.13 = 1,986.49 : x
  2. Step 2: Convert to fraction form
    6,918.17/10,375.13 = 1,986.49/x
  3. Step 3: Cross multiply
    6,918.17x = 10,375.13 × 1,986.49
  4. Step 4: Simplify right side
    6,918.17x = 20,610,040.12
  5. Step 5: Solve for x
    x = 20,610,040.12/6,918.17
  6. Step 6: Final answer
    x = 2,979.12

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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.