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Finding the Fourth Proportional to 3,928.79, 5,892.10 and 1,556.48

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Solution

The fourth proportional to 3,928.79, 5,892.10 and 1,556.48 is: 2,334.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.79 : 5,892.10 = 1,556.48 : x
  2. Step 2: Convert to fraction form
    3,928.79/5,892.10 = 1,556.48/x
  3. Step 3: Cross multiply
    3,928.79x = 5,892.10 × 1,556.48
  4. Step 4: Simplify right side
    3,928.79x = 9,170,946.65
  5. Step 5: Solve for x
    x = 9,170,946.65/3,928.79
  6. Step 6: Final answer
    x = 2,334.29

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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.