Home / 7,786.20-11,703.60-7,640.40

Finding the Fourth Proportional to 7,786.20, 11,703.60 and 7,640.40

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Solution

The fourth proportional to 7,786.20, 11,703.60 and 7,640.40 is: 11,484.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,786.20 : 11,703.60 = 7,640.40 : x
  2. Step 2: Convert to fraction form
    7,786.20/11,703.60 = 7,640.40/x
  3. Step 3: Cross multiply
    7,786.20x = 11,703.60 × 7,640.40
  4. Step 4: Simplify right side
    7,786.20x = 89,420,185.44
  5. Step 5: Solve for x
    x = 89,420,185.44/7,786.20
  6. Step 6: Final answer
    x = 11,484.44

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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.