Home / 2,161.18-2,982.22-1,276.81

Finding the Fourth Proportional to 2,161.18, 2,982.22 and 1,276.81

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Solution

The fourth proportional to 2,161.18, 2,982.22 and 1,276.81 is: 1,761.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.18 : 2,982.22 = 1,276.81 : x
  2. Step 2: Convert to fraction form
    2,161.18/2,982.22 = 1,276.81/x
  3. Step 3: Cross multiply
    2,161.18x = 2,982.22 × 1,276.81
  4. Step 4: Simplify right side
    2,161.18x = 3,807,734.45
  5. Step 5: Solve for x
    x = 3,807,734.45/2,161.18
  6. Step 6: Final answer
    x = 1,761.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.