Home / 1,351.83-2,028.60-985.71

Finding the Fourth Proportional to 1,351.83, 2,028.60 and 985.71

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Solution

The fourth proportional to 1,351.83, 2,028.60 and 985.71 is: 1,479.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.83 : 2,028.60 = 985.71 : x
  2. Step 2: Convert to fraction form
    1,351.83/2,028.60 = 985.71/x
  3. Step 3: Cross multiply
    1,351.83x = 2,028.60 × 985.71
  4. Step 4: Simplify right side
    1,351.83x = 1,999,611.31
  5. Step 5: Solve for x
    x = 1,999,611.31/1,351.83
  6. Step 6: Final answer
    x = 1,479.19

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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.