Home / 1,731.20-2,388.96-945.09

Finding the Fourth Proportional to 1,731.20, 2,388.96 and 945.09

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Solution

The fourth proportional to 1,731.20, 2,388.96 and 945.09 is: 1,304.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.20 : 2,388.96 = 945.09 : x
  2. Step 2: Convert to fraction form
    1,731.20/2,388.96 = 945.09/x
  3. Step 3: Cross multiply
    1,731.20x = 2,388.96 × 945.09
  4. Step 4: Simplify right side
    1,731.20x = 2,257,782.21
  5. Step 5: Solve for x
    x = 2,257,782.21/1,731.20
  6. Step 6: Final answer
    x = 1,304.18

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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.