Home / 1,439.68-1,986.80-850.24

Finding the Fourth Proportional to 1,439.68, 1,986.80 and 850.24

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Solution

The fourth proportional to 1,439.68, 1,986.80 and 850.24 is: 1,173.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.68 : 1,986.80 = 850.24 : x
  2. Step 2: Convert to fraction form
    1,439.68/1,986.80 = 850.24/x
  3. Step 3: Cross multiply
    1,439.68x = 1,986.80 × 850.24
  4. Step 4: Simplify right side
    1,439.68x = 1,689,256.83
  5. Step 5: Solve for x
    x = 1,689,256.83/1,439.68
  6. Step 6: Final answer
    x = 1,173.36

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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.