Home / 1,186.05-1,636.97-1,149.57

Finding the Fourth Proportional to 1,186.05, 1,636.97 and 1,149.57

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Solution

The fourth proportional to 1,186.05, 1,636.97 and 1,149.57 is: 1,586.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.05 : 1,636.97 = 1,149.57 : x
  2. Step 2: Convert to fraction form
    1,186.05/1,636.97 = 1,149.57/x
  3. Step 3: Cross multiply
    1,186.05x = 1,636.97 × 1,149.57
  4. Step 4: Simplify right side
    1,186.05x = 1,881,805.86
  5. Step 5: Solve for x
    x = 1,881,805.86/1,186.05
  6. Step 6: Final answer
    x = 1,586.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.