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Finding the Fourth Proportional to 8,443.46, 11,645.79 and 7,322.45

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Solution

The fourth proportional to 8,443.46, 11,645.79 and 7,322.45 is: 10,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,443.46 : 11,645.79 = 7,322.45 : x
  2. Step 2: Convert to fraction form
    8,443.46/11,645.79 = 7,322.45/x
  3. Step 3: Cross multiply
    8,443.46x = 11,645.79 × 7,322.45
  4. Step 4: Simplify right side
    8,443.46x = 85,275,629.30
  5. Step 5: Solve for x
    x = 85,275,629.30/8,443.46
  6. Step 6: Final answer
    x = 10,099.60

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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.