Home / 2,816.17-4,220.96-2,120.60

Finding the Fourth Proportional to 2,816.17, 4,220.96 and 2,120.60

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Solution

The fourth proportional to 2,816.17, 4,220.96 and 2,120.60 is: 3,178.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.17 : 4,220.96 = 2,120.60 : x
  2. Step 2: Convert to fraction form
    2,816.17/4,220.96 = 2,120.60/x
  3. Step 3: Cross multiply
    2,816.17x = 4,220.96 × 2,120.60
  4. Step 4: Simplify right side
    2,816.17x = 8,950,955.91
  5. Step 5: Solve for x
    x = 8,950,955.91/2,816.17
  6. Step 6: Final answer
    x = 3,178.42

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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.