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Finding the Fourth Proportional to 2,361.92, 3,258.90 and 1,890.81

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Solution

The fourth proportional to 2,361.92, 3,258.90 and 1,890.81 is: 2,608.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,361.92 : 3,258.90 = 1,890.81 : x
  2. Step 2: Convert to fraction form
    2,361.92/3,258.90 = 1,890.81/x
  3. Step 3: Cross multiply
    2,361.92x = 3,258.90 × 1,890.81
  4. Step 4: Simplify right side
    2,361.92x = 6,161,960.71
  5. Step 5: Solve for x
    x = 6,161,960.71/2,361.92
  6. Step 6: Final answer
    x = 2,608.88

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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.