Home / 6,805.20-9,391.20-3,821.16

Finding the Fourth Proportional to 6,805.20, 9,391.20 and 3,821.16

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Solution

The fourth proportional to 6,805.20, 9,391.20 and 3,821.16 is: 5,273.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,805.20 : 9,391.20 = 3,821.16 : x
  2. Step 2: Convert to fraction form
    6,805.20/9,391.20 = 3,821.16/x
  3. Step 3: Cross multiply
    6,805.20x = 9,391.20 × 3,821.16
  4. Step 4: Simplify right side
    6,805.20x = 35,885,277.79
  5. Step 5: Solve for x
    x = 35,885,277.79/6,805.20
  6. Step 6: Final answer
    x = 5,273.21

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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.