Home / 8,815.39-13,223.39-2,972.05

Finding the Fourth Proportional to 8,815.39, 13,223.39 and 2,972.05

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Solution

The fourth proportional to 8,815.39, 13,223.39 and 2,972.05 is: 4,458.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.39 : 13,223.39 = 2,972.05 : x
  2. Step 2: Convert to fraction form
    8,815.39/13,223.39 = 2,972.05/x
  3. Step 3: Cross multiply
    8,815.39x = 13,223.39 × 2,972.05
  4. Step 4: Simplify right side
    8,815.39x = 39,300,517.56
  5. Step 5: Solve for x
    x = 39,300,517.56/8,815.39
  6. Step 6: Final answer
    x = 4,458.17

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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.