Home / 2,613.45-3,922.85-1,380.63

Finding the Fourth Proportional to 2,613.45, 3,922.85 and 1,380.63

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Solution

The fourth proportional to 2,613.45, 3,922.85 and 1,380.63 is: 2,072.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.45 : 3,922.85 = 1,380.63 : x
  2. Step 2: Convert to fraction form
    2,613.45/3,922.85 = 1,380.63/x
  3. Step 3: Cross multiply
    2,613.45x = 3,922.85 × 1,380.63
  4. Step 4: Simplify right side
    2,613.45x = 5,415,997.49
  5. Step 5: Solve for x
    x = 5,415,997.49/2,613.45
  6. Step 6: Final answer
    x = 2,072.36

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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.