Home / 3,161.04-4,740.74-939.35

Finding the Fourth Proportional to 3,161.04, 4,740.74 and 939.35

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Solution

The fourth proportional to 3,161.04, 4,740.74 and 939.35 is: 1,408.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.04 : 4,740.74 = 939.35 : x
  2. Step 2: Convert to fraction form
    3,161.04/4,740.74 = 939.35/x
  3. Step 3: Cross multiply
    3,161.04x = 4,740.74 × 939.35
  4. Step 4: Simplify right side
    3,161.04x = 4,453,214.12
  5. Step 5: Solve for x
    x = 4,453,214.12/3,161.04
  6. Step 6: Final answer
    x = 1,408.78

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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.