Home / 1,558.83-2,151.19-850.68

Finding the Fourth Proportional to 1,558.83, 2,151.19 and 850.68

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Solution

The fourth proportional to 1,558.83, 2,151.19 and 850.68 is: 1,173.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.83 : 2,151.19 = 850.68 : x
  2. Step 2: Convert to fraction form
    1,558.83/2,151.19 = 850.68/x
  3. Step 3: Cross multiply
    1,558.83x = 2,151.19 × 850.68
  4. Step 4: Simplify right side
    1,558.83x = 1,829,974.31
  5. Step 5: Solve for x
    x = 1,829,974.31/1,558.83
  6. Step 6: Final answer
    x = 1,173.94

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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.