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Finding the Fourth Proportional to 5,398.40, 7,449.52 and 3,040.68

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Solution

The fourth proportional to 5,398.40, 7,449.52 and 3,040.68 is: 4,195.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,398.40 : 7,449.52 = 3,040.68 : x
  2. Step 2: Convert to fraction form
    5,398.40/7,449.52 = 3,040.68/x
  3. Step 3: Cross multiply
    5,398.40x = 7,449.52 × 3,040.68
  4. Step 4: Simplify right side
    5,398.40x = 22,651,606.47
  5. Step 5: Solve for x
    x = 22,651,606.47/5,398.40
  6. Step 6: Final answer
    x = 4,195.99

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.