Home / 5,012.57-6,920.49-3,220.85

Finding the Fourth Proportional to 5,012.57, 6,920.49 and 3,220.85

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Solution

The fourth proportional to 5,012.57, 6,920.49 and 3,220.85 is: 4,446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,012.57 : 6,920.49 = 3,220.85 : x
  2. Step 2: Convert to fraction form
    5,012.57/6,920.49 = 3,220.85/x
  3. Step 3: Cross multiply
    5,012.57x = 6,920.49 × 3,220.85
  4. Step 4: Simplify right side
    5,012.57x = 22,289,889.60
  5. Step 5: Solve for x
    x = 22,289,889.60/5,012.57
  6. Step 6: Final answer
    x = 4,446.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.