Home / 1,439.94-1,986.60-850.41

Finding the Fourth Proportional to 1,439.94, 1,986.60 and 850.41

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Solution

The fourth proportional to 1,439.94, 1,986.60 and 850.41 is: 1,173.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.94 : 1,986.60 = 850.41 : x
  2. Step 2: Convert to fraction form
    1,439.94/1,986.60 = 850.41/x
  3. Step 3: Cross multiply
    1,439.94x = 1,986.60 × 850.41
  4. Step 4: Simplify right side
    1,439.94x = 1,689,424.51
  5. Step 5: Solve for x
    x = 1,689,424.51/1,439.94
  6. Step 6: Final answer
    x = 1,173.26

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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.