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Finding the Fourth Proportional to 6,909, 9,534.60 and 3,924.72

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Solution

The fourth proportional to 6,909, 9,534.60 and 3,924.72 is: 5,416.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,909 : 9,534.60 = 3,924.72 : x
  2. Step 2: Convert to fraction form
    6,909/9,534.60 = 3,924.72/x
  3. Step 3: Cross multiply
    6,909x = 9,534.60 × 3,924.72
  4. Step 4: Simplify right side
    6,909x = 37,420,635.31
  5. Step 5: Solve for x
    x = 37,420,635.31/6,909
  6. Step 6: Final answer
    x = 5,416.22

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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.