Home / 3,122.97-4,309.69-1,725.72

Finding the Fourth Proportional to 3,122.97, 4,309.69 and 1,725.72

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Solution

The fourth proportional to 3,122.97, 4,309.69 and 1,725.72 is: 2,381.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.97 : 4,309.69 = 1,725.72 : x
  2. Step 2: Convert to fraction form
    3,122.97/4,309.69 = 1,725.72/x
  3. Step 3: Cross multiply
    3,122.97x = 4,309.69 × 1,725.72
  4. Step 4: Simplify right side
    3,122.97x = 7,437,318.23
  5. Step 5: Solve for x
    x = 7,437,318.23/3,122.97
  6. Step 6: Final answer
    x = 2,381.49

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Half scale
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Double scale
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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.