Home / 5,179.04-7,772.20-2,809.80

Finding the Fourth Proportional to 5,179.04, 7,772.20 and 2,809.80

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Solution

The fourth proportional to 5,179.04, 7,772.20 and 2,809.80 is: 4,216.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.04 : 7,772.20 = 2,809.80 : x
  2. Step 2: Convert to fraction form
    5,179.04/7,772.20 = 2,809.80/x
  3. Step 3: Cross multiply
    5,179.04x = 7,772.20 × 2,809.80
  4. Step 4: Simplify right side
    5,179.04x = 21,838,327.56
  5. Step 5: Solve for x
    x = 21,838,327.56/5,179.04
  6. Step 6: Final answer
    x = 4,216.67

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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.