Home / 1,439.29-1,986.23-850.12

Finding the Fourth Proportional to 1,439.29, 1,986.23 and 850.12

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Solution

The fourth proportional to 1,439.29, 1,986.23 and 850.12 is: 1,173.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.29 : 1,986.23 = 850.12 : x
  2. Step 2: Convert to fraction form
    1,439.29/1,986.23 = 850.12/x
  3. Step 3: Cross multiply
    1,439.29x = 1,986.23 × 850.12
  4. Step 4: Simplify right side
    1,439.29x = 1,688,519.67
  5. Step 5: Solve for x
    x = 1,688,519.67/1,439.29
  6. Step 6: Final answer
    x = 1,173.17

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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.