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Finding the Fourth Proportional to 8,809.16, 13,216.62 and 3,619.40

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Solution

The fourth proportional to 8,809.16, 13,216.62 and 3,619.40 is: 5,430.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.16 : 13,216.62 = 3,619.40 : x
  2. Step 2: Convert to fraction form
    8,809.16/13,216.62 = 3,619.40/x
  3. Step 3: Cross multiply
    8,809.16x = 13,216.62 × 3,619.40
  4. Step 4: Simplify right side
    8,809.16x = 47,836,234.43
  5. Step 5: Solve for x
    x = 47,836,234.43/8,809.16
  6. Step 6: Final answer
    x = 5,430.28

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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.