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Finding the Fourth Proportional to 8,667.52, 11,958.08 and 5,309.12

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Solution

The fourth proportional to 8,667.52, 11,958.08 and 5,309.12 is: 7,324.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,667.52 : 11,958.08 = 5,309.12 : x
  2. Step 2: Convert to fraction form
    8,667.52/11,958.08 = 5,309.12/x
  3. Step 3: Cross multiply
    8,667.52x = 11,958.08 × 5,309.12
  4. Step 4: Simplify right side
    8,667.52x = 63,486,881.69
  5. Step 5: Solve for x
    x = 63,486,881.69/8,667.52
  6. Step 6: Final answer
    x = 7,324.69

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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.