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Finding the Fourth Proportional to 6,664.14, 9,992.70 and 3,328.74

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Solution

The fourth proportional to 6,664.14, 9,992.70 and 3,328.74 is: 4,991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,664.14 : 9,992.70 = 3,328.74 : x
  2. Step 2: Convert to fraction form
    6,664.14/9,992.70 = 3,328.74/x
  3. Step 3: Cross multiply
    6,664.14x = 9,992.70 × 3,328.74
  4. Step 4: Simplify right side
    6,664.14x = 33,263,100.20
  5. Step 5: Solve for x
    x = 33,263,100.20/6,664.14
  6. Step 6: Final answer
    x = 4,991.36

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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.