Home / 7,823.90-11,736.50-3,143.30

Finding the Fourth Proportional to 7,823.90, 11,736.50 and 3,143.30

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Solution

The fourth proportional to 7,823.90, 11,736.50 and 3,143.30 is: 4,715.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,823.90 : 11,736.50 = 3,143.30 : x
  2. Step 2: Convert to fraction form
    7,823.90/11,736.50 = 3,143.30/x
  3. Step 3: Cross multiply
    7,823.90x = 11,736.50 × 3,143.30
  4. Step 4: Simplify right side
    7,823.90x = 36,891,299.06
  5. Step 5: Solve for x
    x = 36,891,299.06/7,823.90
  6. Step 6: Final answer
    x = 4,715.21

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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.