Home / 2,217.87-3,306.68-2,160.15

Finding the Fourth Proportional to 2,217.87, 3,306.68 and 2,160.15

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Solution

The fourth proportional to 2,217.87, 3,306.68 and 2,160.15 is: 3,220.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.87 : 3,306.68 = 2,160.15 : x
  2. Step 2: Convert to fraction form
    2,217.87/3,306.68 = 2,160.15/x
  3. Step 3: Cross multiply
    2,217.87x = 3,306.68 × 2,160.15
  4. Step 4: Simplify right side
    2,217.87x = 7,142,914.00
  5. Step 5: Solve for x
    x = 7,142,914.00/2,217.87
  6. Step 6: Final answer
    x = 3,220.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.