Home / 3,161.39-4,742.77-1,213.60

Finding the Fourth Proportional to 3,161.39, 4,742.77 and 1,213.60

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Solution

The fourth proportional to 3,161.39, 4,742.77 and 1,213.60 is: 1,820.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.39 : 4,742.77 = 1,213.60 : x
  2. Step 2: Convert to fraction form
    3,161.39/4,742.77 = 1,213.60/x
  3. Step 3: Cross multiply
    3,161.39x = 4,742.77 × 1,213.60
  4. Step 4: Simplify right side
    3,161.39x = 5,755,825.67
  5. Step 5: Solve for x
    x = 5,755,825.67/3,161.39
  6. Step 6: Final answer
    x = 1,820.66

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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.