Home / 2,790.20-3,848.96-1,611.03

Finding the Fourth Proportional to 2,790.20, 3,848.96 and 1,611.03

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Solution

The fourth proportional to 2,790.20, 3,848.96 and 1,611.03 is: 2,222.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.20 : 3,848.96 = 1,611.03 : x
  2. Step 2: Convert to fraction form
    2,790.20/3,848.96 = 1,611.03/x
  3. Step 3: Cross multiply
    2,790.20x = 3,848.96 × 1,611.03
  4. Step 4: Simplify right side
    2,790.20x = 6,200,781.97
  5. Step 5: Solve for x
    x = 6,200,781.97/2,790.20
  6. Step 6: Final answer
    x = 2,222.35

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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.