Home / 3,669.49-5,063.91-1,990.90

Finding the Fourth Proportional to 3,669.49, 5,063.91 and 1,990.90

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Solution

The fourth proportional to 3,669.49, 5,063.91 and 1,990.90 is: 2,747.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669.49 : 5,063.91 = 1,990.90 : x
  2. Step 2: Convert to fraction form
    3,669.49/5,063.91 = 1,990.90/x
  3. Step 3: Cross multiply
    3,669.49x = 5,063.91 × 1,990.90
  4. Step 4: Simplify right side
    3,669.49x = 10,081,713.10
  5. Step 5: Solve for x
    x = 10,081,713.10/3,669.49
  6. Step 6: Final answer
    x = 2,747.45

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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.