Home / 1,351.95-1,861.22-1,185.90

Finding the Fourth Proportional to 1,351.95, 1,861.22 and 1,185.90

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Solution

The fourth proportional to 1,351.95, 1,861.22 and 1,185.90 is: 1,632.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.95 : 1,861.22 = 1,185.90 : x
  2. Step 2: Convert to fraction form
    1,351.95/1,861.22 = 1,185.90/x
  3. Step 3: Cross multiply
    1,351.95x = 1,861.22 × 1,185.90
  4. Step 4: Simplify right side
    1,351.95x = 2,207,214.87
  5. Step 5: Solve for x
    x = 2,207,214.87/1,351.95
  6. Step 6: Final answer
    x = 1,632.62

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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.