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Finding the Fourth Proportional to 8,993.96, 12,412.88 and 5,167.09

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Solution

The fourth proportional to 8,993.96, 12,412.88 and 5,167.09 is: 7,131.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,993.96 : 12,412.88 = 5,167.09 : x
  2. Step 2: Convert to fraction form
    8,993.96/12,412.88 = 5,167.09/x
  3. Step 3: Cross multiply
    8,993.96x = 12,412.88 × 5,167.09
  4. Step 4: Simplify right side
    8,993.96x = 64,138,437.09
  5. Step 5: Solve for x
    x = 64,138,437.09/8,993.96
  6. Step 6: Final answer
    x = 7,131.28

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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.