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Finding the Fourth Proportional to 1,862.37, 2,793.38 and 629.78

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Solution

The fourth proportional to 1,862.37, 2,793.38 and 629.78 is: 944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,862.37 : 2,793.38 = 629.78 : x
  2. Step 2: Convert to fraction form
    1,862.37/2,793.38 = 629.78/x
  3. Step 3: Cross multiply
    1,862.37x = 2,793.38 × 629.78
  4. Step 4: Simplify right side
    1,862.37x = 1,759,197.74
  5. Step 5: Solve for x
    x = 1,759,197.74/1,862.37
  6. Step 6: Final answer
    x = 944.60

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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.