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Finding the Fourth Proportional to 3,161.07, 4,741.61 and 852.57

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Solution

The fourth proportional to 3,161.07, 4,741.61 and 852.57 is: 1,278.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.07 : 4,741.61 = 852.57 : x
  2. Step 2: Convert to fraction form
    3,161.07/4,741.61 = 852.57/x
  3. Step 3: Cross multiply
    3,161.07x = 4,741.61 × 852.57
  4. Step 4: Simplify right side
    3,161.07x = 4,042,550.17
  5. Step 5: Solve for x
    x = 4,042,550.17/3,161.07
  6. Step 6: Final answer
    x = 1,278.86

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Similar ratio
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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.