Home / 7,408.20-11,112.30-5,755.80

Finding the Fourth Proportional to 7,408.20, 11,112.30 and 5,755.80

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Solution

The fourth proportional to 7,408.20, 11,112.30 and 5,755.80 is: 8,633.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.20 : 11,112.30 = 5,755.80 : x
  2. Step 2: Convert to fraction form
    7,408.20/11,112.30 = 5,755.80/x
  3. Step 3: Cross multiply
    7,408.20x = 11,112.30 × 5,755.80
  4. Step 4: Simplify right side
    7,408.20x = 63,960,176.34
  5. Step 5: Solve for x
    x = 63,960,176.34/7,408.20
  6. Step 6: Final answer
    x = 8,633.70

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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.