Home / 1,725.24-2,380.86-939.32

Finding the Fourth Proportional to 1,725.24, 2,380.86 and 939.32

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Solution

The fourth proportional to 1,725.24, 2,380.86 and 939.32 is: 1,296.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.24 : 2,380.86 = 939.32 : x
  2. Step 2: Convert to fraction form
    1,725.24/2,380.86 = 939.32/x
  3. Step 3: Cross multiply
    1,725.24x = 2,380.86 × 939.32
  4. Step 4: Simplify right side
    1,725.24x = 2,236,389.42
  5. Step 5: Solve for x
    x = 2,236,389.42/1,725.24
  6. Step 6: Final answer
    x = 1,296.28

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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.