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Finding the Fourth Proportional to 5,657.78, 7,808.28 and 3,299.42

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Solution

The fourth proportional to 5,657.78, 7,808.28 and 3,299.42 is: 4,553.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.78 : 7,808.28 = 3,299.42 : x
  2. Step 2: Convert to fraction form
    5,657.78/7,808.28 = 3,299.42/x
  3. Step 3: Cross multiply
    5,657.78x = 7,808.28 × 3,299.42
  4. Step 4: Simplify right side
    5,657.78x = 25,762,795.20
  5. Step 5: Solve for x
    x = 25,762,795.20/5,657.78
  6. Step 6: Final answer
    x = 4,553.52

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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.