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Finding the Fourth Proportional to 9,903.75, 13,667.18 and 5,487.75

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Solution

The fourth proportional to 9,903.75, 13,667.18 and 5,487.75 is: 7,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,903.75 : 13,667.18 = 5,487.75 : x
  2. Step 2: Convert to fraction form
    9,903.75/13,667.18 = 5,487.75/x
  3. Step 3: Cross multiply
    9,903.75x = 13,667.18 × 5,487.75
  4. Step 4: Simplify right side
    9,903.75x = 75,002,067.05
  5. Step 5: Solve for x
    x = 75,002,067.05/9,903.75
  6. Step 6: Final answer
    x = 7,573.10

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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.