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Finding the Fourth Proportional to 3,855.56, 5,785.50 and 1,547.24

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Solution

The fourth proportional to 3,855.56, 5,785.50 and 1,547.24 is: 2,321.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.56 : 5,785.50 = 1,547.24 : x
  2. Step 2: Convert to fraction form
    3,855.56/5,785.50 = 1,547.24/x
  3. Step 3: Cross multiply
    3,855.56x = 5,785.50 × 1,547.24
  4. Step 4: Simplify right side
    3,855.56x = 8,951,557.02
  5. Step 5: Solve for x
    x = 8,951,557.02/3,855.56
  6. Step 6: Final answer
    x = 2,321.73

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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.