Home / 5,261.90-7,878.47-3,408.44

Finding the Fourth Proportional to 5,261.90, 7,878.47 and 3,408.44

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Solution

The fourth proportional to 5,261.90, 7,878.47 and 3,408.44 is: 5,103.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.90 : 7,878.47 = 3,408.44 : x
  2. Step 2: Convert to fraction form
    5,261.90/7,878.47 = 3,408.44/x
  3. Step 3: Cross multiply
    5,261.90x = 7,878.47 × 3,408.44
  4. Step 4: Simplify right side
    5,261.90x = 26,853,235.85
  5. Step 5: Solve for x
    x = 26,853,235.85/5,261.90
  6. Step 6: Final answer
    x = 5,103.34

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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.