Home / 8,140.25-11,229.75-4,781.99

Finding the Fourth Proportional to 8,140.25, 11,229.75 and 4,781.99

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Solution

The fourth proportional to 8,140.25, 11,229.75 and 4,781.99 is: 6,596.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.25 : 11,229.75 = 4,781.99 : x
  2. Step 2: Convert to fraction form
    8,140.25/11,229.75 = 4,781.99/x
  3. Step 3: Cross multiply
    8,140.25x = 11,229.75 × 4,781.99
  4. Step 4: Simplify right side
    8,140.25x = 53,700,496.05
  5. Step 5: Solve for x
    x = 53,700,496.05/8,140.25
  6. Step 6: Final answer
    x = 6,596.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.