Home / 8,109.78-11,196.36-7,269

Finding the Fourth Proportional to 8,109.78, 11,196.36 and 7,269

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Solution

The fourth proportional to 8,109.78, 11,196.36 and 7,269 is: 10,035.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.78 : 11,196.36 = 7,269 : x
  2. Step 2: Convert to fraction form
    8,109.78/11,196.36 = 7,269/x
  3. Step 3: Cross multiply
    8,109.78x = 11,196.36 × 7,269
  4. Step 4: Simplify right side
    8,109.78x = 81,386,340.84
  5. Step 5: Solve for x
    x = 81,386,340.84/8,109.78
  6. Step 6: Final answer
    x = 10,035.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.