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Finding the Fourth Proportional to 3,952.72, 5,927.12 and 1,355.28

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Solution

The fourth proportional to 3,952.72, 5,927.12 and 1,355.28 is: 2,032.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,952.72 : 5,927.12 = 1,355.28 : x
  2. Step 2: Convert to fraction form
    3,952.72/5,927.12 = 1,355.28/x
  3. Step 3: Cross multiply
    3,952.72x = 5,927.12 × 1,355.28
  4. Step 4: Simplify right side
    3,952.72x = 8,032,907.19
  5. Step 5: Solve for x
    x = 8,032,907.19/3,952.72
  6. Step 6: Final answer
    x = 2,032.25

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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.