Home / 5,255.76-7,878.30-3,408.04

Finding the Fourth Proportional to 5,255.76, 7,878.30 and 3,408.04

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Solution

The fourth proportional to 5,255.76, 7,878.30 and 3,408.04 is: 5,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.76 : 7,878.30 = 3,408.04 : x
  2. Step 2: Convert to fraction form
    5,255.76/7,878.30 = 3,408.04/x
  3. Step 3: Cross multiply
    5,255.76x = 7,878.30 × 3,408.04
  4. Step 4: Simplify right side
    5,255.76x = 26,849,561.53
  5. Step 5: Solve for x
    x = 26,849,561.53/5,255.76
  6. Step 6: Final answer
    x = 5,108.60

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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.