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Finding the Fourth Proportional to 3,472.78, 4,792.42 and 1,900.88

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Solution

The fourth proportional to 3,472.78, 4,792.42 and 1,900.88 is: 2,623.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,472.78 : 4,792.42 = 1,900.88 : x
  2. Step 2: Convert to fraction form
    3,472.78/4,792.42 = 1,900.88/x
  3. Step 3: Cross multiply
    3,472.78x = 4,792.42 × 1,900.88
  4. Step 4: Simplify right side
    3,472.78x = 9,109,815.33
  5. Step 5: Solve for x
    x = 9,109,815.33/3,472.78
  6. Step 6: Final answer
    x = 2,623.21

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1.5x scale

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.