Home / 1,725.10-2,380.63-939.14

Finding the Fourth Proportional to 1,725.10, 2,380.63 and 939.14

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Solution

The fourth proportional to 1,725.10, 2,380.63 and 939.14 is: 1,296.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.10 : 2,380.63 = 939.14 : x
  2. Step 2: Convert to fraction form
    1,725.10/2,380.63 = 939.14/x
  3. Step 3: Cross multiply
    1,725.10x = 2,380.63 × 939.14
  4. Step 4: Simplify right side
    1,725.10x = 2,235,744.86
  5. Step 5: Solve for x
    x = 2,235,744.86/1,725.10
  6. Step 6: Final answer
    x = 1,296.01

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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.