Home / 7,279.48-10,912.74-3,381.76

Finding the Fourth Proportional to 7,279.48, 10,912.74 and 3,381.76

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Solution

The fourth proportional to 7,279.48, 10,912.74 and 3,381.76 is: 5,069.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.48 : 10,912.74 = 3,381.76 : x
  2. Step 2: Convert to fraction form
    7,279.48/10,912.74 = 3,381.76/x
  3. Step 3: Cross multiply
    7,279.48x = 10,912.74 × 3,381.76
  4. Step 4: Simplify right side
    7,279.48x = 36,904,267.62
  5. Step 5: Solve for x
    x = 36,904,267.62/7,279.48
  6. Step 6: Final answer
    x = 5,069.63

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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.