Home / 7,279.20-10,905.84-3,376.80

Finding the Fourth Proportional to 7,279.20, 10,905.84 and 3,376.80

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Solution

The fourth proportional to 7,279.20, 10,905.84 and 3,376.80 is: 5,059.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.20 : 10,905.84 = 3,376.80 : x
  2. Step 2: Convert to fraction form
    7,279.20/10,905.84 = 3,376.80/x
  3. Step 3: Cross multiply
    7,279.20x = 10,905.84 × 3,376.80
  4. Step 4: Simplify right side
    7,279.20x = 36,826,840.51
  5. Step 5: Solve for x
    x = 36,826,840.51/7,279.20
  6. Step 6: Final answer
    x = 5,059.19

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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.