Home / 1,731.16-2,388.97-945.21

Finding the Fourth Proportional to 1,731.16, 2,388.97 and 945.21

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Solution

The fourth proportional to 1,731.16, 2,388.97 and 945.21 is: 1,304.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.16 : 2,388.97 = 945.21 : x
  2. Step 2: Convert to fraction form
    1,731.16/2,388.97 = 945.21/x
  3. Step 3: Cross multiply
    1,731.16x = 2,388.97 × 945.21
  4. Step 4: Simplify right side
    1,731.16x = 2,258,078.33
  5. Step 5: Solve for x
    x = 2,258,078.33/1,731.16
  6. Step 6: Final answer
    x = 1,304.37

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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.