Home / 1,942.22-2,911.17-1,276.40

Finding the Fourth Proportional to 1,942.22, 2,911.17 and 1,276.40

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Solution

The fourth proportional to 1,942.22, 2,911.17 and 1,276.40 is: 1,913.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.22 : 2,911.17 = 1,276.40 : x
  2. Step 2: Convert to fraction form
    1,942.22/2,911.17 = 1,276.40/x
  3. Step 3: Cross multiply
    1,942.22x = 2,911.17 × 1,276.40
  4. Step 4: Simplify right side
    1,942.22x = 3,715,817.39
  5. Step 5: Solve for x
    x = 3,715,817.39/1,942.22
  6. Step 6: Final answer
    x = 1,913.18

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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.