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Finding the Fourth Proportional to 4,892.60, 7,338.90 and 1,969.40

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Solution

The fourth proportional to 4,892.60, 7,338.90 and 1,969.40 is: 2,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,892.60 : 7,338.90 = 1,969.40 : x
  2. Step 2: Convert to fraction form
    4,892.60/7,338.90 = 1,969.40/x
  3. Step 3: Cross multiply
    4,892.60x = 7,338.90 × 1,969.40
  4. Step 4: Simplify right side
    4,892.60x = 14,453,229.66
  5. Step 5: Solve for x
    x = 14,453,229.66/4,892.60
  6. Step 6: Final answer
    x = 2,954.10

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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.