Home / 8,922.30-13,378.05-3,991.02

Finding the Fourth Proportional to 8,922.30, 13,378.05 and 3,991.02

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Solution

The fourth proportional to 8,922.30, 13,378.05 and 3,991.02 is: 5,984.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,922.30 : 13,378.05 = 3,991.02 : x
  2. Step 2: Convert to fraction form
    8,922.30/13,378.05 = 3,991.02/x
  3. Step 3: Cross multiply
    8,922.30x = 13,378.05 × 3,991.02
  4. Step 4: Simplify right side
    8,922.30x = 53,392,065.11
  5. Step 5: Solve for x
    x = 53,392,065.11/8,922.30
  6. Step 6: Final answer
    x = 5,984.11

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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.