Home / 5,279.70-7,912.54-2,809.20

Finding the Fourth Proportional to 5,279.70, 7,912.54 and 2,809.20

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Solution

The fourth proportional to 5,279.70, 7,912.54 and 2,809.20 is: 4,210.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.70 : 7,912.54 = 2,809.20 : x
  2. Step 2: Convert to fraction form
    5,279.70/7,912.54 = 2,809.20/x
  3. Step 3: Cross multiply
    5,279.70x = 7,912.54 × 2,809.20
  4. Step 4: Simplify right side
    5,279.70x = 22,227,907.37
  5. Step 5: Solve for x
    x = 22,227,907.37/5,279.70
  6. Step 6: Final answer
    x = 4,210.07

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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.