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Finding the Fourth Proportional to 8,913.75, 12,297.99 and 5,507.11

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Solution

The fourth proportional to 8,913.75, 12,297.99 and 5,507.11 is: 7,597.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.75 : 12,297.99 = 5,507.11 : x
  2. Step 2: Convert to fraction form
    8,913.75/12,297.99 = 5,507.11/x
  3. Step 3: Cross multiply
    8,913.75x = 12,297.99 × 5,507.11
  4. Step 4: Simplify right side
    8,913.75x = 67,726,419.73
  5. Step 5: Solve for x
    x = 67,726,419.73/8,913.75
  6. Step 6: Final answer
    x = 7,597.97

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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.