Home / 8,721.96-13,083.50-2,878.62

Finding the Fourth Proportional to 8,721.96, 13,083.50 and 2,878.62

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Solution

The fourth proportional to 8,721.96, 13,083.50 and 2,878.62 is: 4,318.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.96 : 13,083.50 = 2,878.62 : x
  2. Step 2: Convert to fraction form
    8,721.96/13,083.50 = 2,878.62/x
  3. Step 3: Cross multiply
    8,721.96x = 13,083.50 × 2,878.62
  4. Step 4: Simplify right side
    8,721.96x = 37,662,410.38
  5. Step 5: Solve for x
    x = 37,662,410.38/8,721.96
  6. Step 6: Final answer
    x = 4,318.11

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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.