Home / 1,942.17-2,680.26-1,145.55

Finding the Fourth Proportional to 1,942.17, 2,680.26 and 1,145.55

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Solution

The fourth proportional to 1,942.17, 2,680.26 and 1,145.55 is: 1,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.17 : 2,680.26 = 1,145.55 : x
  2. Step 2: Convert to fraction form
    1,942.17/2,680.26 = 1,145.55/x
  3. Step 3: Cross multiply
    1,942.17x = 2,680.26 × 1,145.55
  4. Step 4: Simplify right side
    1,942.17x = 3,070,371.84
  5. Step 5: Solve for x
    x = 3,070,371.84/1,942.17
  6. Step 6: Final answer
    x = 1,580.90

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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.