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Finding the Fourth Proportional to 8,154.70, 11,251.95 and 7,739.48

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Solution

The fourth proportional to 8,154.70, 11,251.95 and 7,739.48 is: 10,679.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,154.70 : 11,251.95 = 7,739.48 : x
  2. Step 2: Convert to fraction form
    8,154.70/11,251.95 = 7,739.48/x
  3. Step 3: Cross multiply
    8,154.70x = 11,251.95 × 7,739.48
  4. Step 4: Simplify right side
    8,154.70x = 87,084,241.99
  5. Step 5: Solve for x
    x = 87,084,241.99/8,154.70
  6. Step 6: Final answer
    x = 10,679.02

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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.