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Finding the Fourth Proportional to 2,485.56, 3,727.32 and 729.96

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Solution

The fourth proportional to 2,485.56, 3,727.32 and 729.96 is: 1,094.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.56 : 3,727.32 = 729.96 : x
  2. Step 2: Convert to fraction form
    2,485.56/3,727.32 = 729.96/x
  3. Step 3: Cross multiply
    2,485.56x = 3,727.32 × 729.96
  4. Step 4: Simplify right side
    2,485.56x = 2,720,794.51
  5. Step 5: Solve for x
    x = 2,720,794.51/2,485.56
  6. Step 6: Final answer
    x = 1,094.64

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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.