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Finding the Fourth Proportional to 6,405.84, 8,839.98 and 3,754.62

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Solution

The fourth proportional to 6,405.84, 8,839.98 and 3,754.62 is: 5,181.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.84 : 8,839.98 = 3,754.62 : x
  2. Step 2: Convert to fraction form
    6,405.84/8,839.98 = 3,754.62/x
  3. Step 3: Cross multiply
    6,405.84x = 8,839.98 × 3,754.62
  4. Step 4: Simplify right side
    6,405.84x = 33,190,765.71
  5. Step 5: Solve for x
    x = 33,190,765.71/6,405.84
  6. Step 6: Final answer
    x = 5,181.33

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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.