Home / 2,922.57-4,031.52-1,912.87

Finding the Fourth Proportional to 2,922.57, 4,031.52 and 1,912.87

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Solution

The fourth proportional to 2,922.57, 4,031.52 and 1,912.87 is: 2,638.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,922.57 : 4,031.52 = 1,912.87 : x
  2. Step 2: Convert to fraction form
    2,922.57/4,031.52 = 1,912.87/x
  3. Step 3: Cross multiply
    2,922.57x = 4,031.52 × 1,912.87
  4. Step 4: Simplify right side
    2,922.57x = 7,711,743.94
  5. Step 5: Solve for x
    x = 7,711,743.94/2,922.57
  6. Step 6: Final answer
    x = 2,638.69

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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.