Home / 5,181.62-7,765.47-1,891.53

Finding the Fourth Proportional to 5,181.62, 7,765.47 and 1,891.53

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Solution

The fourth proportional to 5,181.62, 7,765.47 and 1,891.53 is: 2,834.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.62 : 7,765.47 = 1,891.53 : x
  2. Step 2: Convert to fraction form
    5,181.62/7,765.47 = 1,891.53/x
  3. Step 3: Cross multiply
    5,181.62x = 7,765.47 × 1,891.53
  4. Step 4: Simplify right side
    5,181.62x = 14,688,619.47
  5. Step 5: Solve for x
    x = 14,688,619.47/5,181.62
  6. Step 6: Final answer
    x = 2,834.76

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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.