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Finding the Fourth Proportional to 1,954.57, 2,938.21 and 1,568.80

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Solution

The fourth proportional to 1,954.57, 2,938.21 and 1,568.80 is: 2,358.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.57 : 2,938.21 = 1,568.80 : x
  2. Step 2: Convert to fraction form
    1,954.57/2,938.21 = 1,568.80/x
  3. Step 3: Cross multiply
    1,954.57x = 2,938.21 × 1,568.80
  4. Step 4: Simplify right side
    1,954.57x = 4,609,441.31
  5. Step 5: Solve for x
    x = 4,609,441.31/1,954.57
  6. Step 6: Final answer
    x = 2,358.29

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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.