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Finding the Fourth Proportional to 6,805.32, 9,390.65 and 3,821.13

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Solution

The fourth proportional to 6,805.32, 9,390.65 and 3,821.13 is: 5,272.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,805.32 : 9,390.65 = 3,821.13 : x
  2. Step 2: Convert to fraction form
    6,805.32/9,390.65 = 3,821.13/x
  3. Step 3: Cross multiply
    6,805.32x = 9,390.65 × 3,821.13
  4. Step 4: Simplify right side
    6,805.32x = 35,882,894.43
  5. Step 5: Solve for x
    x = 35,882,894.43/6,805.32
  6. Step 6: Final answer
    x = 5,272.77

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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.