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Finding the Fourth Proportional to 9,332.19, 12,902.82 and 8,919.09

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Solution

The fourth proportional to 9,332.19, 12,902.82 and 8,919.09 is: 12,331.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,332.19 : 12,902.82 = 8,919.09 : x
  2. Step 2: Convert to fraction form
    9,332.19/12,902.82 = 8,919.09/x
  3. Step 3: Cross multiply
    9,332.19x = 12,902.82 × 8,919.09
  4. Step 4: Simplify right side
    9,332.19x = 115,081,412.83
  5. Step 5: Solve for x
    x = 115,081,412.83/9,332.19
  6. Step 6: Final answer
    x = 12,331.66

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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.