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Finding the Fourth Proportional to 3,188.68, 4,781.02 and 1,455.08

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Solution

The fourth proportional to 3,188.68, 4,781.02 and 1,455.08 is: 2,181.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.68 : 4,781.02 = 1,455.08 : x
  2. Step 2: Convert to fraction form
    3,188.68/4,781.02 = 1,455.08/x
  3. Step 3: Cross multiply
    3,188.68x = 4,781.02 × 1,455.08
  4. Step 4: Simplify right side
    3,188.68x = 6,956,766.58
  5. Step 5: Solve for x
    x = 6,956,766.58/3,188.68
  6. Step 6: Final answer
    x = 2,181.71

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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.