Home / 1,912.57-2,638.47-1,126.24

Finding the Fourth Proportional to 1,912.57, 2,638.47 and 1,126.24

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Solution

The fourth proportional to 1,912.57, 2,638.47 and 1,126.24 is: 1,553.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.57 : 2,638.47 = 1,126.24 : x
  2. Step 2: Convert to fraction form
    1,912.57/2,638.47 = 1,126.24/x
  3. Step 3: Cross multiply
    1,912.57x = 2,638.47 × 1,126.24
  4. Step 4: Simplify right side
    1,912.57x = 2,971,550.45
  5. Step 5: Solve for x
    x = 2,971,550.45/1,912.57
  6. Step 6: Final answer
    x = 1,553.70

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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.