Home / 3,639.98-5,022.83-2,127.90

Finding the Fourth Proportional to 3,639.98, 5,022.83 and 2,127.90

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Solution

The fourth proportional to 3,639.98, 5,022.83 and 2,127.90 is: 2,936.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.98 : 5,022.83 = 2,127.90 : x
  2. Step 2: Convert to fraction form
    3,639.98/5,022.83 = 2,127.90/x
  3. Step 3: Cross multiply
    3,639.98x = 5,022.83 × 2,127.90
  4. Step 4: Simplify right side
    3,639.98x = 10,688,044.20
  5. Step 5: Solve for x
    x = 10,688,044.20/3,639.98
  6. Step 6: Final answer
    x = 2,936.29

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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.