Home / 1,731.09-2,388.92-945.15

Finding the Fourth Proportional to 1,731.09, 2,388.92 and 945.15

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Solution

The fourth proportional to 1,731.09, 2,388.92 and 945.15 is: 1,304.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.09 : 2,388.92 = 945.15 : x
  2. Step 2: Convert to fraction form
    1,731.09/2,388.92 = 945.15/x
  3. Step 3: Cross multiply
    1,731.09x = 2,388.92 × 945.15
  4. Step 4: Simplify right side
    1,731.09x = 2,257,883.01
  5. Step 5: Solve for x
    x = 2,257,883.01/1,731.09
  6. Step 6: Final answer
    x = 1,304.31

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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.