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Finding the Fourth Proportional to 8,750.54, 13,129.08 and 5,243.02

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Solution

The fourth proportional to 8,750.54, 13,129.08 and 5,243.02 is: 7,866.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,750.54 : 13,129.08 = 5,243.02 : x
  2. Step 2: Convert to fraction form
    8,750.54/13,129.08 = 5,243.02/x
  3. Step 3: Cross multiply
    8,750.54x = 13,129.08 × 5,243.02
  4. Step 4: Simplify right side
    8,750.54x = 68,836,029.02
  5. Step 5: Solve for x
    x = 68,836,029.02/8,750.54
  6. Step 6: Final answer
    x = 7,866.49

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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.