Home / 3,161.20-4,741.40-852.88

Finding the Fourth Proportional to 3,161.20, 4,741.40 and 852.88

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Solution

The fourth proportional to 3,161.20, 4,741.40 and 852.88 is: 1,279.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.20 : 4,741.40 = 852.88 : x
  2. Step 2: Convert to fraction form
    3,161.20/4,741.40 = 852.88/x
  3. Step 3: Cross multiply
    3,161.20x = 4,741.40 × 852.88
  4. Step 4: Simplify right side
    3,161.20x = 4,043,845.23
  5. Step 5: Solve for x
    x = 4,043,845.23/3,161.20
  6. Step 6: Final answer
    x = 1,279.21

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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.