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Finding the Fourth Proportional to 5,009.81, 7,500.74 and 2,539.31

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Solution

The fourth proportional to 5,009.81, 7,500.74 and 2,539.31 is: 3,801.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,009.81 : 7,500.74 = 2,539.31 : x
  2. Step 2: Convert to fraction form
    5,009.81/7,500.74 = 2,539.31/x
  3. Step 3: Cross multiply
    5,009.81x = 7,500.74 × 2,539.31
  4. Step 4: Simplify right side
    5,009.81x = 19,046,704.09
  5. Step 5: Solve for x
    x = 19,046,704.09/5,009.81
  6. Step 6: Final answer
    x = 3,801.88

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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.