Home / 9,321.20-13,981.85-3,477.75

Finding the Fourth Proportional to 9,321.20, 13,981.85 and 3,477.75

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Solution

The fourth proportional to 9,321.20, 13,981.85 and 3,477.75 is: 5,216.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.20 : 13,981.85 = 3,477.75 : x
  2. Step 2: Convert to fraction form
    9,321.20/13,981.85 = 3,477.75/x
  3. Step 3: Cross multiply
    9,321.20x = 13,981.85 × 3,477.75
  4. Step 4: Simplify right side
    9,321.20x = 48,625,361.45
  5. Step 5: Solve for x
    x = 48,625,361.45/9,321.20
  6. Step 6: Final answer
    x = 5,216.64

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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.