Home / 7,220.20-10,828.68-3,320.86

Finding the Fourth Proportional to 7,220.20, 10,828.68 and 3,320.86

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Solution

The fourth proportional to 7,220.20, 10,828.68 and 3,320.86 is: 4,980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.20 : 10,828.68 = 3,320.86 : x
  2. Step 2: Convert to fraction form
    7,220.20/10,828.68 = 3,320.86/x
  3. Step 3: Cross multiply
    7,220.20x = 10,828.68 × 3,320.86
  4. Step 4: Simplify right side
    7,220.20x = 35,960,530.26
  5. Step 5: Solve for x
    x = 35,960,530.26/7,220.20
  6. Step 6: Final answer
    x = 4,980.54

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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.