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Finding the Fourth Proportional to 8,699.31, 13,048.88 and 2,125.53

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Solution

The fourth proportional to 8,699.31, 13,048.88 and 2,125.53 is: 3,188.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.31 : 13,048.88 = 2,125.53 : x
  2. Step 2: Convert to fraction form
    8,699.31/13,048.88 = 2,125.53/x
  3. Step 3: Cross multiply
    8,699.31x = 13,048.88 × 2,125.53
  4. Step 4: Simplify right side
    8,699.31x = 27,735,775.28
  5. Step 5: Solve for x
    x = 27,735,775.28/8,699.31
  6. Step 6: Final answer
    x = 3,188.27

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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.