Home / 8,721.72-13,083.39-3,175.65

Finding the Fourth Proportional to 8,721.72, 13,083.39 and 3,175.65

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Solution

The fourth proportional to 8,721.72, 13,083.39 and 3,175.65 is: 4,763.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.72 : 13,083.39 = 3,175.65 : x
  2. Step 2: Convert to fraction form
    8,721.72/13,083.39 = 3,175.65/x
  3. Step 3: Cross multiply
    8,721.72x = 13,083.39 × 3,175.65
  4. Step 4: Simplify right side
    8,721.72x = 41,548,267.45
  5. Step 5: Solve for x
    x = 41,548,267.45/8,721.72
  6. Step 6: Final answer
    x = 4,763.77

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1.5x scale

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.