Home / 8,678.32-13,021.12-4,519.38

Finding the Fourth Proportional to 8,678.32, 13,021.12 and 4,519.38

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Solution

The fourth proportional to 8,678.32, 13,021.12 and 4,519.38 is: 6,780.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.32 : 13,021.12 = 4,519.38 : x
  2. Step 2: Convert to fraction form
    8,678.32/13,021.12 = 4,519.38/x
  3. Step 3: Cross multiply
    8,678.32x = 13,021.12 × 4,519.38
  4. Step 4: Simplify right side
    8,678.32x = 58,847,389.31
  5. Step 5: Solve for x
    x = 58,847,389.31/8,678.32
  6. Step 6: Final answer
    x = 6,780.97

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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.