Home / 2,400.39-3,599.37-939.15

Finding the Fourth Proportional to 2,400.39, 3,599.37 and 939.15

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Solution

The fourth proportional to 2,400.39, 3,599.37 and 939.15 is: 1,408.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,400.39 : 3,599.37 = 939.15 : x
  2. Step 2: Convert to fraction form
    2,400.39/3,599.37 = 939.15/x
  3. Step 3: Cross multiply
    2,400.39x = 3,599.37 × 939.15
  4. Step 4: Simplify right side
    2,400.39x = 3,380,348.34
  5. Step 5: Solve for x
    x = 3,380,348.34/2,400.39
  6. Step 6: Final answer
    x = 1,408.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.