Home / 1,549.39-2,138.19-850.81

Finding the Fourth Proportional to 1,549.39, 2,138.19 and 850.81

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Solution

The fourth proportional to 1,549.39, 2,138.19 and 850.81 is: 1,174.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.39 : 2,138.19 = 850.81 : x
  2. Step 2: Convert to fraction form
    1,549.39/2,138.19 = 850.81/x
  3. Step 3: Cross multiply
    1,549.39x = 2,138.19 × 850.81
  4. Step 4: Simplify right side
    1,549.39x = 1,819,193.43
  5. Step 5: Solve for x
    x = 1,819,193.43/1,549.39
  6. Step 6: Final answer
    x = 1,174.14

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1.5x scale

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.