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Finding the Fourth Proportional to 7,989.39, 11,036.12 and 7,244.19

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Solution

The fourth proportional to 7,989.39, 11,036.12 and 7,244.19 is: 10,006.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.39 : 11,036.12 = 7,244.19 : x
  2. Step 2: Convert to fraction form
    7,989.39/11,036.12 = 7,244.19/x
  3. Step 3: Cross multiply
    7,989.39x = 11,036.12 × 7,244.19
  4. Step 4: Simplify right side
    7,989.39x = 79,947,713.92
  5. Step 5: Solve for x
    x = 79,947,713.92/7,989.39
  6. Step 6: Final answer
    x = 10,006.74

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Half scale
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Double scale
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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.