Home / 5,085.87-7,627.57-1,388.11

Finding the Fourth Proportional to 5,085.87, 7,627.57 and 1,388.11

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Solution

The fourth proportional to 5,085.87, 7,627.57 and 1,388.11 is: 2,081.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.87 : 7,627.57 = 1,388.11 : x
  2. Step 2: Convert to fraction form
    5,085.87/7,627.57 = 1,388.11/x
  3. Step 3: Cross multiply
    5,085.87x = 7,627.57 × 1,388.11
  4. Step 4: Simplify right side
    5,085.87x = 10,587,906.19
  5. Step 5: Solve for x
    x = 10,587,906.19/5,085.87
  6. Step 6: Final answer
    x = 2,081.83

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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.