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Finding the Fourth Proportional to 8,755.51, 13,125.80 and 3,821.46

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Solution

The fourth proportional to 8,755.51, 13,125.80 and 3,821.46 is: 5,728.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.51 : 13,125.80 = 3,821.46 : x
  2. Step 2: Convert to fraction form
    8,755.51/13,125.80 = 3,821.46/x
  3. Step 3: Cross multiply
    8,755.51x = 13,125.80 × 3,821.46
  4. Step 4: Simplify right side
    8,755.51x = 50,159,719.67
  5. Step 5: Solve for x
    x = 50,159,719.67/8,755.51
  6. Step 6: Final answer
    x = 5,728.93

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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.