Home / 1,725.06-2,380.57-939.11

Finding the Fourth Proportional to 1,725.06, 2,380.57 and 939.11

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Solution

The fourth proportional to 1,725.06, 2,380.57 and 939.11 is: 1,295.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.06 : 2,380.57 = 939.11 : x
  2. Step 2: Convert to fraction form
    1,725.06/2,380.57 = 939.11/x
  3. Step 3: Cross multiply
    1,725.06x = 2,380.57 × 939.11
  4. Step 4: Simplify right side
    1,725.06x = 2,235,600.49
  5. Step 5: Solve for x
    x = 2,235,600.49/1,725.06
  6. Step 6: Final answer
    x = 1,295.96

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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.