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Finding the Fourth Proportional to 2,382.64, 3,574.64 and 922.21

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Solution

The fourth proportional to 2,382.64, 3,574.64 and 922.21 is: 1,383.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.64 : 3,574.64 = 922.21 : x
  2. Step 2: Convert to fraction form
    2,382.64/3,574.64 = 922.21/x
  3. Step 3: Cross multiply
    2,382.64x = 3,574.64 × 922.21
  4. Step 4: Simplify right side
    2,382.64x = 3,296,568.75
  5. Step 5: Solve for x
    x = 3,296,568.75/2,382.64
  6. Step 6: Final answer
    x = 1,383.58

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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.