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Finding the Fourth Proportional to 2,372.24, 3,558.84 and 728.88

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Solution

The fourth proportional to 2,372.24, 3,558.84 and 728.88 is: 1,093.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,372.24 : 3,558.84 = 728.88 : x
  2. Step 2: Convert to fraction form
    2,372.24/3,558.84 = 728.88/x
  3. Step 3: Cross multiply
    2,372.24x = 3,558.84 × 728.88
  4. Step 4: Simplify right side
    2,372.24x = 2,593,967.30
  5. Step 5: Solve for x
    x = 2,593,967.30/2,372.24
  6. Step 6: Final answer
    x = 1,093.47

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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.