Home / 8,721.47-13,073.74-3,454.73

Finding the Fourth Proportional to 8,721.47, 13,073.74 and 3,454.73

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Solution

The fourth proportional to 8,721.47, 13,073.74 and 3,454.73 is: 5,178.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.47 : 13,073.74 = 3,454.73 : x
  2. Step 2: Convert to fraction form
    8,721.47/13,073.74 = 3,454.73/x
  3. Step 3: Cross multiply
    8,721.47x = 13,073.74 × 3,454.73
  4. Step 4: Simplify right side
    8,721.47x = 45,166,180.04
  5. Step 5: Solve for x
    x = 45,166,180.04/8,721.47
  6. Step 6: Final answer
    x = 5,178.73

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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.