Home / 9,121.76-13,679.28-3,276.80

Finding the Fourth Proportional to 9,121.76, 13,679.28 and 3,276.80

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Solution

The fourth proportional to 9,121.76, 13,679.28 and 3,276.80 is: 4,913.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.76 : 13,679.28 = 3,276.80 : x
  2. Step 2: Convert to fraction form
    9,121.76/13,679.28 = 3,276.80/x
  3. Step 3: Cross multiply
    9,121.76x = 13,679.28 × 3,276.80
  4. Step 4: Simplify right side
    9,121.76x = 44,824,264.70
  5. Step 5: Solve for x
    x = 44,824,264.70/9,121.76
  6. Step 6: Final answer
    x = 4,913.99

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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.