Home / 7,981.36-11,979.33-6,126.46

Finding the Fourth Proportional to 7,981.36, 11,979.33 and 6,126.46

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Solution

The fourth proportional to 7,981.36, 11,979.33 and 6,126.46 is: 9,195.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.36 : 11,979.33 = 6,126.46 : x
  2. Step 2: Convert to fraction form
    7,981.36/11,979.33 = 6,126.46/x
  3. Step 3: Cross multiply
    7,981.36x = 11,979.33 × 6,126.46
  4. Step 4: Simplify right side
    7,981.36x = 73,390,833.15
  5. Step 5: Solve for x
    x = 73,390,833.15/7,981.36
  6. Step 6: Final answer
    x = 9,195.28

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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.