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Finding the Fourth Proportional to 3,855.94, 5,784.72 and 1,547.44

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Solution

The fourth proportional to 3,855.94, 5,784.72 and 1,547.44 is: 2,321.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.94 : 5,784.72 = 1,547.44 : x
  2. Step 2: Convert to fraction form
    3,855.94/5,784.72 = 1,547.44/x
  3. Step 3: Cross multiply
    3,855.94x = 5,784.72 × 1,547.44
  4. Step 4: Simplify right side
    3,855.94x = 8,951,486.85
  5. Step 5: Solve for x
    x = 8,951,486.85/3,855.94
  6. Step 6: Final answer
    x = 2,321.48

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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.