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Finding the Fourth Proportional to 8,101.84, 11,180.40 and 5,122.84

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Solution

The fourth proportional to 8,101.84, 11,180.40 and 5,122.84 is: 7,069.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,101.84 : 11,180.40 = 5,122.84 : x
  2. Step 2: Convert to fraction form
    8,101.84/11,180.40 = 5,122.84/x
  3. Step 3: Cross multiply
    8,101.84x = 11,180.40 × 5,122.84
  4. Step 4: Simplify right side
    8,101.84x = 57,275,400.34
  5. Step 5: Solve for x
    x = 57,275,400.34/8,101.84
  6. Step 6: Final answer
    x = 7,069.43

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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.