Home / 1,725.13-2,380.68-939.16

Finding the Fourth Proportional to 1,725.13, 2,380.68 and 939.16

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Solution

The fourth proportional to 1,725.13, 2,380.68 and 939.16 is: 1,296.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.13 : 2,380.68 = 939.16 : x
  2. Step 2: Convert to fraction form
    1,725.13/2,380.68 = 939.16/x
  3. Step 3: Cross multiply
    1,725.13x = 2,380.68 × 939.16
  4. Step 4: Simplify right side
    1,725.13x = 2,235,839.43
  5. Step 5: Solve for x
    x = 2,235,839.43/1,725.13
  6. Step 6: Final answer
    x = 1,296.04

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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.