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Finding the Fourth Proportional to 6,661.70, 9,126.39 and 6,412.42

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Solution

The fourth proportional to 6,661.70, 9,126.39 and 6,412.42 is: 8,784.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,661.70 : 9,126.39 = 6,412.42 : x
  2. Step 2: Convert to fraction form
    6,661.70/9,126.39 = 6,412.42/x
  3. Step 3: Cross multiply
    6,661.70x = 9,126.39 × 6,412.42
  4. Step 4: Simplify right side
    6,661.70x = 58,522,245.76
  5. Step 5: Solve for x
    x = 58,522,245.76/6,661.70
  6. Step 6: Final answer
    x = 8,784.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.