Home / 2,116.49-3,175.22-1,021.78

Finding the Fourth Proportional to 2,116.49, 3,175.22 and 1,021.78

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Solution

The fourth proportional to 2,116.49, 3,175.22 and 1,021.78 is: 1,532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.49 : 3,175.22 = 1,021.78 : x
  2. Step 2: Convert to fraction form
    2,116.49/3,175.22 = 1,021.78/x
  3. Step 3: Cross multiply
    2,116.49x = 3,175.22 × 1,021.78
  4. Step 4: Simplify right side
    2,116.49x = 3,244,376.29
  5. Step 5: Solve for x
    x = 3,244,376.29/2,116.49
  6. Step 6: Final answer
    x = 1,532.90

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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.