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Finding the Fourth Proportional to 8,751.76, 13,131.48 and 3,561.36

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Solution

The fourth proportional to 8,751.76, 13,131.48 and 3,561.36 is: 5,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.76 : 13,131.48 = 3,561.36 : x
  2. Step 2: Convert to fraction form
    8,751.76/13,131.48 = 3,561.36/x
  3. Step 3: Cross multiply
    8,751.76x = 13,131.48 × 3,561.36
  4. Step 4: Simplify right side
    8,751.76x = 46,765,927.61
  5. Step 5: Solve for x
    x = 46,765,927.61/8,751.76
  6. Step 6: Final answer
    x = 5,343.60

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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.