Home / 4,997.20-7,488.60-2,221.60

Finding the Fourth Proportional to 4,997.20, 7,488.60 and 2,221.60

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Solution

The fourth proportional to 4,997.20, 7,488.60 and 2,221.60 is: 3,329.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,997.20 : 7,488.60 = 2,221.60 : x
  2. Step 2: Convert to fraction form
    4,997.20/7,488.60 = 2,221.60/x
  3. Step 3: Cross multiply
    4,997.20x = 7,488.60 × 2,221.60
  4. Step 4: Simplify right side
    4,997.20x = 16,636,673.76
  5. Step 5: Solve for x
    x = 16,636,673.76/4,997.20
  6. Step 6: Final answer
    x = 3,329.20

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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.