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Finding the Fourth Proportional to 2,938.96, 4,401.96 and 1,782.28

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Solution

The fourth proportional to 2,938.96, 4,401.96 and 1,782.28 is: 2,669.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.96 : 4,401.96 = 1,782.28 : x
  2. Step 2: Convert to fraction form
    2,938.96/4,401.96 = 1,782.28/x
  3. Step 3: Cross multiply
    2,938.96x = 4,401.96 × 1,782.28
  4. Step 4: Simplify right side
    2,938.96x = 7,845,525.27
  5. Step 5: Solve for x
    x = 7,845,525.27/2,938.96
  6. Step 6: Final answer
    x = 2,669.49

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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.