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Finding the Fourth Proportional to 3,552.64, 5,328.56 and 955.78

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Solution

The fourth proportional to 3,552.64, 5,328.56 and 955.78 is: 1,433.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,552.64 : 5,328.56 = 955.78 : x
  2. Step 2: Convert to fraction form
    3,552.64/5,328.56 = 955.78/x
  3. Step 3: Cross multiply
    3,552.64x = 5,328.56 × 955.78
  4. Step 4: Simplify right side
    3,552.64x = 5,092,926.30
  5. Step 5: Solve for x
    x = 5,092,926.30/3,552.64
  6. Step 6: Final answer
    x = 1,433.56

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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.