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Finding the Fourth Proportional to 2,665.66, 3,999.06 and 1,022.21

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Solution

The fourth proportional to 2,665.66, 3,999.06 and 1,022.21 is: 1,533.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.66 : 3,999.06 = 1,022.21 : x
  2. Step 2: Convert to fraction form
    2,665.66/3,999.06 = 1,022.21/x
  3. Step 3: Cross multiply
    2,665.66x = 3,999.06 × 1,022.21
  4. Step 4: Simplify right side
    2,665.66x = 4,087,879.12
  5. Step 5: Solve for x
    x = 4,087,879.12/2,665.66
  6. Step 6: Final answer
    x = 1,533.53

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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.