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Finding the Fourth Proportional to 8,888.68, 13,323.76 and 3,621.43

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Solution

The fourth proportional to 8,888.68, 13,323.76 and 3,621.43 is: 5,428.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,888.68 : 13,323.76 = 3,621.43 : x
  2. Step 2: Convert to fraction form
    8,888.68/13,323.76 = 3,621.43/x
  3. Step 3: Cross multiply
    8,888.68x = 13,323.76 × 3,621.43
  4. Step 4: Simplify right side
    8,888.68x = 48,251,064.18
  5. Step 5: Solve for x
    x = 48,251,064.18/8,888.68
  6. Step 6: Final answer
    x = 5,428.37

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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.