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Finding the Fourth Proportional to 9,873.40, 13,625.49 and 5,397.43

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Solution

The fourth proportional to 9,873.40, 13,625.49 and 5,397.43 is: 7,448.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,873.40 : 13,625.49 = 5,397.43 : x
  2. Step 2: Convert to fraction form
    9,873.40/13,625.49 = 5,397.43/x
  3. Step 3: Cross multiply
    9,873.40x = 13,625.49 × 5,397.43
  4. Step 4: Simplify right side
    9,873.40x = 73,542,628.49
  5. Step 5: Solve for x
    x = 73,542,628.49/9,873.40
  6. Step 6: Final answer
    x = 7,448.56

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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.