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Finding the Fourth Proportional to 5,289.25, 7,934.33 and 1,393.67

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Solution

The fourth proportional to 5,289.25, 7,934.33 and 1,393.67 is: 2,090.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289.25 : 7,934.33 = 1,393.67 : x
  2. Step 2: Convert to fraction form
    5,289.25/7,934.33 = 1,393.67/x
  3. Step 3: Cross multiply
    5,289.25x = 7,934.33 × 1,393.67
  4. Step 4: Simplify right side
    5,289.25x = 11,057,837.69
  5. Step 5: Solve for x
    x = 11,057,837.69/5,289.25
  6. Step 6: Final answer
    x = 2,090.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.