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Finding the Fourth Proportional to 8,739.40, 13,083.33 and 5,772.40

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Solution

The fourth proportional to 8,739.40, 13,083.33 and 5,772.40 is: 8,641.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.40 : 13,083.33 = 5,772.40 : x
  2. Step 2: Convert to fraction form
    8,739.40/13,083.33 = 5,772.40/x
  3. Step 3: Cross multiply
    8,739.40x = 13,083.33 × 5,772.40
  4. Step 4: Simplify right side
    8,739.40x = 75,522,214.09
  5. Step 5: Solve for x
    x = 75,522,214.09/8,739.40
  6. Step 6: Final answer
    x = 8,641.58

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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.