Home / 7,609.20-11,408.40-3,445.80

Finding the Fourth Proportional to 7,609.20, 11,408.40 and 3,445.80

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Solution

The fourth proportional to 7,609.20, 11,408.40 and 3,445.80 is: 5,166.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,609.20 : 11,408.40 = 3,445.80 : x
  2. Step 2: Convert to fraction form
    7,609.20/11,408.40 = 3,445.80/x
  3. Step 3: Cross multiply
    7,609.20x = 11,408.40 × 3,445.80
  4. Step 4: Simplify right side
    7,609.20x = 39,311,064.72
  5. Step 5: Solve for x
    x = 39,311,064.72/7,609.20
  6. Step 6: Final answer
    x = 5,166.25

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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.