Home / 1,439.28-1,986.44-850.14

Finding the Fourth Proportional to 1,439.28, 1,986.44 and 850.14

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Solution

The fourth proportional to 1,439.28, 1,986.44 and 850.14 is: 1,173.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.28 : 1,986.44 = 850.14 : x
  2. Step 2: Convert to fraction form
    1,439.28/1,986.44 = 850.14/x
  3. Step 3: Cross multiply
    1,439.28x = 1,986.44 × 850.14
  4. Step 4: Simplify right side
    1,439.28x = 1,688,747.85
  5. Step 5: Solve for x
    x = 1,688,747.85/1,439.28
  6. Step 6: Final answer
    x = 1,173.33

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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.