Home / 1,731.32-2,389.20-945.36

Finding the Fourth Proportional to 1,731.32, 2,389.20 and 945.36

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Solution

The fourth proportional to 1,731.32, 2,389.20 and 945.36 is: 1,304.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.32 : 2,389.20 = 945.36 : x
  2. Step 2: Convert to fraction form
    1,731.32/2,389.20 = 945.36/x
  3. Step 3: Cross multiply
    1,731.32x = 2,389.20 × 945.36
  4. Step 4: Simplify right side
    1,731.32x = 2,258,654.11
  5. Step 5: Solve for x
    x = 2,258,654.11/1,731.32
  6. Step 6: Final answer
    x = 1,304.59

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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.