Home / 7,755.20-11,607.84-5,418.08

Finding the Fourth Proportional to 7,755.20, 11,607.84 and 5,418.08

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Solution

The fourth proportional to 7,755.20, 11,607.84 and 5,418.08 is: 8,109.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.20 : 11,607.84 = 5,418.08 : x
  2. Step 2: Convert to fraction form
    7,755.20/11,607.84 = 5,418.08/x
  3. Step 3: Cross multiply
    7,755.20x = 11,607.84 × 5,418.08
  4. Step 4: Simplify right side
    7,755.20x = 62,892,205.75
  5. Step 5: Solve for x
    x = 62,892,205.75/7,755.20
  6. Step 6: Final answer
    x = 8,109.68

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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.