Home / 7,181.20-10,770.94-1,916.61

Finding the Fourth Proportional to 7,181.20, 10,770.94 and 1,916.61

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Solution

The fourth proportional to 7,181.20, 10,770.94 and 1,916.61 is: 2,874.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.20 : 10,770.94 = 1,916.61 : x
  2. Step 2: Convert to fraction form
    7,181.20/10,770.94 = 1,916.61/x
  3. Step 3: Cross multiply
    7,181.20x = 10,770.94 × 1,916.61
  4. Step 4: Simplify right side
    7,181.20x = 20,643,653.32
  5. Step 5: Solve for x
    x = 20,643,653.32/7,181.20
  6. Step 6: Final answer
    x = 2,874.68

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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.