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Finding the Fourth Proportional to 3,669.32, 5,063.63 and 1,990.77

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Solution

The fourth proportional to 3,669.32, 5,063.63 and 1,990.77 is: 2,747.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669.32 : 5,063.63 = 1,990.77 : x
  2. Step 2: Convert to fraction form
    3,669.32/5,063.63 = 1,990.77/x
  3. Step 3: Cross multiply
    3,669.32x = 5,063.63 × 1,990.77
  4. Step 4: Simplify right side
    3,669.32x = 10,080,493.75
  5. Step 5: Solve for x
    x = 10,080,493.75/3,669.32
  6. Step 6: Final answer
    x = 2,747.24

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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.