Home / 1,439.58-1,986.87-850.14

Finding the Fourth Proportional to 1,439.58, 1,986.87 and 850.14

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Solution

The fourth proportional to 1,439.58, 1,986.87 and 850.14 is: 1,173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.58 : 1,986.87 = 850.14 : x
  2. Step 2: Convert to fraction form
    1,439.58/1,986.87 = 850.14/x
  3. Step 3: Cross multiply
    1,439.58x = 1,986.87 × 850.14
  4. Step 4: Simplify right side
    1,439.58x = 1,689,117.66
  5. Step 5: Solve for x
    x = 1,689,117.66/1,439.58
  6. Step 6: Final answer
    x = 1,173.34

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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.