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Finding the Fourth Proportional to 4,969.11, 7,449.03 and 1,679.90

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Solution

The fourth proportional to 4,969.11, 7,449.03 and 1,679.90 is: 2,518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,969.11 : 7,449.03 = 1,679.90 : x
  2. Step 2: Convert to fraction form
    4,969.11/7,449.03 = 1,679.90/x
  3. Step 3: Cross multiply
    4,969.11x = 7,449.03 × 1,679.90
  4. Step 4: Simplify right side
    4,969.11x = 12,513,617.10
  5. Step 5: Solve for x
    x = 12,513,617.10/4,969.11
  6. Step 6: Final answer
    x = 2,518.28

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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.