Home / 2,408.55-3,609.45-1,915.80

Finding the Fourth Proportional to 2,408.55, 3,609.45 and 1,915.80

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Solution

The fourth proportional to 2,408.55, 3,609.45 and 1,915.80 is: 2,871.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.55 : 3,609.45 = 1,915.80 : x
  2. Step 2: Convert to fraction form
    2,408.55/3,609.45 = 1,915.80/x
  3. Step 3: Cross multiply
    2,408.55x = 3,609.45 × 1,915.80
  4. Step 4: Simplify right side
    2,408.55x = 6,914,984.31
  5. Step 5: Solve for x
    x = 6,914,984.31/2,408.55
  6. Step 6: Final answer
    x = 2,871.02

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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.