Home / 1,399.25-1,927.51-1,199.43

Finding the Fourth Proportional to 1,399.25, 1,927.51 and 1,199.43

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Solution

The fourth proportional to 1,399.25, 1,927.51 and 1,199.43 is: 1,652.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399.25 : 1,927.51 = 1,199.43 : x
  2. Step 2: Convert to fraction form
    1,399.25/1,927.51 = 1,199.43/x
  3. Step 3: Cross multiply
    1,399.25x = 1,927.51 × 1,199.43
  4. Step 4: Simplify right side
    1,399.25x = 2,311,910.32
  5. Step 5: Solve for x
    x = 2,311,910.32/1,399.25
  6. Step 6: Final answer
    x = 1,652.25

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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.