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Finding the Fourth Proportional to 9,317.84, 13,978.84 and 3,079.80

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Solution

The fourth proportional to 9,317.84, 13,978.84 and 3,079.80 is: 4,620.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,317.84 : 13,978.84 = 3,079.80 : x
  2. Step 2: Convert to fraction form
    9,317.84/13,978.84 = 3,079.80/x
  3. Step 3: Cross multiply
    9,317.84x = 13,978.84 × 3,079.80
  4. Step 4: Simplify right side
    9,317.84x = 43,052,031.43
  5. Step 5: Solve for x
    x = 43,052,031.43/9,317.84
  6. Step 6: Final answer
    x = 4,620.39

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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.