Home / 8,680.30-13,021.83-3,135.02

Finding the Fourth Proportional to 8,680.30, 13,021.83 and 3,135.02

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Solution

The fourth proportional to 8,680.30, 13,021.83 and 3,135.02 is: 4,703.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.30 : 13,021.83 = 3,135.02 : x
  2. Step 2: Convert to fraction form
    8,680.30/13,021.83 = 3,135.02/x
  3. Step 3: Cross multiply
    8,680.30x = 13,021.83 × 3,135.02
  4. Step 4: Simplify right side
    8,680.30x = 40,823,632.38
  5. Step 5: Solve for x
    x = 40,823,632.38/8,680.30
  6. Step 6: Final answer
    x = 4,703.02

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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.