Home / 3,187.22-4,398.21-1,770.99

Finding the Fourth Proportional to 3,187.22, 4,398.21 and 1,770.99

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Solution

The fourth proportional to 3,187.22, 4,398.21 and 1,770.99 is: 2,443.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.22 : 4,398.21 = 1,770.99 : x
  2. Step 2: Convert to fraction form
    3,187.22/4,398.21 = 1,770.99/x
  3. Step 3: Cross multiply
    3,187.22x = 4,398.21 × 1,770.99
  4. Step 4: Simplify right side
    3,187.22x = 7,789,185.93
  5. Step 5: Solve for x
    x = 7,789,185.93/3,187.22
  6. Step 6: Final answer
    x = 2,443.88

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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.