Home / 1,181.12-1,771.68-1,008.98

Finding the Fourth Proportional to 1,181.12, 1,771.68 and 1,008.98

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Solution

The fourth proportional to 1,181.12, 1,771.68 and 1,008.98 is: 1,513.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.12 : 1,771.68 = 1,008.98 : x
  2. Step 2: Convert to fraction form
    1,181.12/1,771.68 = 1,008.98/x
  3. Step 3: Cross multiply
    1,181.12x = 1,771.68 × 1,008.98
  4. Step 4: Simplify right side
    1,181.12x = 1,787,589.69
  5. Step 5: Solve for x
    x = 1,787,589.69/1,181.12
  6. Step 6: Final answer
    x = 1,513.47

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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.