Home / 2,781.82-4,173.23-1,684.90

Finding the Fourth Proportional to 2,781.82, 4,173.23 and 1,684.90

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Solution

The fourth proportional to 2,781.82, 4,173.23 and 1,684.90 is: 2,527.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.82 : 4,173.23 = 1,684.90 : x
  2. Step 2: Convert to fraction form
    2,781.82/4,173.23 = 1,684.90/x
  3. Step 3: Cross multiply
    2,781.82x = 4,173.23 × 1,684.90
  4. Step 4: Simplify right side
    2,781.82x = 7,031,475.23
  5. Step 5: Solve for x
    x = 7,031,475.23/2,781.82
  6. Step 6: Final answer
    x = 2,527.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.