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Finding the Fourth Proportional to 3,538.72, 5,308.08 and 941.56

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Solution

The fourth proportional to 3,538.72, 5,308.08 and 941.56 is: 1,412.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,538.72 : 5,308.08 = 941.56 : x
  2. Step 2: Convert to fraction form
    3,538.72/5,308.08 = 941.56/x
  3. Step 3: Cross multiply
    3,538.72x = 5,308.08 × 941.56
  4. Step 4: Simplify right side
    3,538.72x = 4,997,875.80
  5. Step 5: Solve for x
    x = 4,997,875.80/3,538.72
  6. Step 6: Final answer
    x = 1,412.34

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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.