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Finding the Fourth Proportional to 6,909.56, 9,534.84 and 3,765.72

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Solution

The fourth proportional to 6,909.56, 9,534.84 and 3,765.72 is: 5,196.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,909.56 : 9,534.84 = 3,765.72 : x
  2. Step 2: Convert to fraction form
    6,909.56/9,534.84 = 3,765.72/x
  3. Step 3: Cross multiply
    6,909.56x = 9,534.84 × 3,765.72
  4. Step 4: Simplify right side
    6,909.56x = 35,905,537.68
  5. Step 5: Solve for x
    x = 35,905,537.68/6,909.56
  6. Step 6: Final answer
    x = 5,196.50

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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.