Home / 3,669.36-5,063.72-1,990.76

Finding the Fourth Proportional to 3,669.36, 5,063.72 and 1,990.76

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Solution

The fourth proportional to 3,669.36, 5,063.72 and 1,990.76 is: 2,747.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669.36 : 5,063.72 = 1,990.76 : x
  2. Step 2: Convert to fraction form
    3,669.36/5,063.72 = 1,990.76/x
  3. Step 3: Cross multiply
    3,669.36x = 5,063.72 × 1,990.76
  4. Step 4: Simplify right side
    3,669.36x = 10,080,651.23
  5. Step 5: Solve for x
    x = 10,080,651.23/3,669.36
  6. Step 6: Final answer
    x = 2,747.25

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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.