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Finding the Fourth Proportional to 3,900.92, 5,862.31 and 1,954.49

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Solution

The fourth proportional to 3,900.92, 5,862.31 and 1,954.49 is: 2,937.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.92 : 5,862.31 = 1,954.49 : x
  2. Step 2: Convert to fraction form
    3,900.92/5,862.31 = 1,954.49/x
  3. Step 3: Cross multiply
    3,900.92x = 5,862.31 × 1,954.49
  4. Step 4: Simplify right side
    3,900.92x = 11,457,792.07
  5. Step 5: Solve for x
    x = 11,457,792.07/3,900.92
  6. Step 6: Final answer
    x = 2,937.21

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1.5x scale

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.