Home / 2,220.87-3,063.78-1,435.17

Finding the Fourth Proportional to 2,220.87, 3,063.78 and 1,435.17

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Solution

The fourth proportional to 2,220.87, 3,063.78 and 1,435.17 is: 1,979.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.87 : 3,063.78 = 1,435.17 : x
  2. Step 2: Convert to fraction form
    2,220.87/3,063.78 = 1,435.17/x
  3. Step 3: Cross multiply
    2,220.87x = 3,063.78 × 1,435.17
  4. Step 4: Simplify right side
    2,220.87x = 4,397,045.14
  5. Step 5: Solve for x
    x = 4,397,045.14/2,220.87
  6. Step 6: Final answer
    x = 1,979.88

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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.