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Finding the Fourth Proportional to 6,765.84, 10,149.72 and 2,086.22

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Solution

The fourth proportional to 6,765.84, 10,149.72 and 2,086.22 is: 3,129.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,765.84 : 10,149.72 = 2,086.22 : x
  2. Step 2: Convert to fraction form
    6,765.84/10,149.72 = 2,086.22/x
  3. Step 3: Cross multiply
    6,765.84x = 10,149.72 × 2,086.22
  4. Step 4: Simplify right side
    6,765.84x = 21,174,548.86
  5. Step 5: Solve for x
    x = 21,174,548.86/6,765.84
  6. Step 6: Final answer
    x = 3,129.63

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1.5x scale

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.