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Finding the Fourth Proportional to 8,707.89, 13,063.98 and 2,551.89

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Solution

The fourth proportional to 8,707.89, 13,063.98 and 2,551.89 is: 3,828.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.89 : 13,063.98 = 2,551.89 : x
  2. Step 2: Convert to fraction form
    8,707.89/13,063.98 = 2,551.89/x
  3. Step 3: Cross multiply
    8,707.89x = 13,063.98 × 2,551.89
  4. Step 4: Simplify right side
    8,707.89x = 33,337,839.92
  5. Step 5: Solve for x
    x = 33,337,839.92/8,707.89
  6. Step 6: Final answer
    x = 3,828.46

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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.