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Finding the Fourth Proportional to 2,938.60, 4,044.90 and 2,938.60

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Solution

The fourth proportional to 2,938.60, 4,044.90 and 2,938.60 is: 4,044.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.60 : 4,044.90 = 2,938.60 : x
  2. Step 2: Convert to fraction form
    2,938.60/4,044.90 = 2,938.60/x
  3. Step 3: Cross multiply
    2,938.60x = 4,044.90 × 2,938.60
  4. Step 4: Simplify right side
    2,938.60x = 11,886,343.14
  5. Step 5: Solve for x
    x = 11,886,343.14/2,938.60
  6. Step 6: Final answer
    x = 4,044.90

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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.