Home / 8,721.05-13,077.53-3,788.15

Finding the Fourth Proportional to 8,721.05, 13,077.53 and 3,788.15

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Solution

The fourth proportional to 8,721.05, 13,077.53 and 3,788.15 is: 5,680.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.05 : 13,077.53 = 3,788.15 : x
  2. Step 2: Convert to fraction form
    8,721.05/13,077.53 = 3,788.15/x
  3. Step 3: Cross multiply
    8,721.05x = 13,077.53 × 3,788.15
  4. Step 4: Simplify right side
    8,721.05x = 49,539,626.33
  5. Step 5: Solve for x
    x = 49,539,626.33/8,721.05
  6. Step 6: Final answer
    x = 5,680.47

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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.