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Finding the Fourth Proportional to 3,101.82, 4,652.72 and 761.83

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Solution

The fourth proportional to 3,101.82, 4,652.72 and 761.83 is: 1,142.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.82 : 4,652.72 = 761.83 : x
  2. Step 2: Convert to fraction form
    3,101.82/4,652.72 = 761.83/x
  3. Step 3: Cross multiply
    3,101.82x = 4,652.72 × 761.83
  4. Step 4: Simplify right side
    3,101.82x = 3,544,581.68
  5. Step 5: Solve for x
    x = 3,544,581.68/3,101.82
  6. Step 6: Final answer
    x = 1,142.74

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.