Home / 5,613.78-8,422.49-2,692.31

Finding the Fourth Proportional to 5,613.78, 8,422.49 and 2,692.31

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Solution

The fourth proportional to 5,613.78, 8,422.49 and 2,692.31 is: 4,039.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,613.78 : 8,422.49 = 2,692.31 : x
  2. Step 2: Convert to fraction form
    5,613.78/8,422.49 = 2,692.31/x
  3. Step 3: Cross multiply
    5,613.78x = 8,422.49 × 2,692.31
  4. Step 4: Simplify right side
    5,613.78x = 22,675,981.84
  5. Step 5: Solve for x
    x = 22,675,981.84/5,613.78
  6. Step 6: Final answer
    x = 4,039.34

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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.