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Finding the Fourth Proportional to 6,895.22, 9,515.82 and 3,909.96

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Solution

The fourth proportional to 6,895.22, 9,515.82 and 3,909.96 is: 5,395.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,895.22 : 9,515.82 = 3,909.96 : x
  2. Step 2: Convert to fraction form
    6,895.22/9,515.82 = 3,909.96/x
  3. Step 3: Cross multiply
    6,895.22x = 9,515.82 × 3,909.96
  4. Step 4: Simplify right side
    6,895.22x = 37,206,475.57
  5. Step 5: Solve for x
    x = 37,206,475.57/6,895.22
  6. Step 6: Final answer
    x = 5,395.98

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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.