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Finding the Fourth Proportional to 8,493.39, 11,731.11 and 7,428.45

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Solution

The fourth proportional to 8,493.39, 11,731.11 and 7,428.45 is: 10,260.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,493.39 : 11,731.11 = 7,428.45 : x
  2. Step 2: Convert to fraction form
    8,493.39/11,731.11 = 7,428.45/x
  3. Step 3: Cross multiply
    8,493.39x = 11,731.11 × 7,428.45
  4. Step 4: Simplify right side
    8,493.39x = 87,143,964.08
  5. Step 5: Solve for x
    x = 87,143,964.08/8,493.39
  6. Step 6: Final answer
    x = 10,260.21

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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.