Home / 1,644.21-2,268.75-945.57

Finding the Fourth Proportional to 1,644.21, 2,268.75 and 945.57

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Solution

The fourth proportional to 1,644.21, 2,268.75 and 945.57 is: 1,304.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.21 : 2,268.75 = 945.57 : x
  2. Step 2: Convert to fraction form
    1,644.21/2,268.75 = 945.57/x
  3. Step 3: Cross multiply
    1,644.21x = 2,268.75 × 945.57
  4. Step 4: Simplify right side
    1,644.21x = 2,145,261.94
  5. Step 5: Solve for x
    x = 2,145,261.94/1,644.21
  6. Step 6: Final answer
    x = 1,304.74

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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.