Home / 3,122.94-4,309.69-1,725.69

Finding the Fourth Proportional to 3,122.94, 4,309.69 and 1,725.69

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Solution

The fourth proportional to 3,122.94, 4,309.69 and 1,725.69 is: 2,381.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.94 : 4,309.69 = 1,725.69 : x
  2. Step 2: Convert to fraction form
    3,122.94/4,309.69 = 1,725.69/x
  3. Step 3: Cross multiply
    3,122.94x = 4,309.69 × 1,725.69
  4. Step 4: Simplify right side
    3,122.94x = 7,437,188.94
  5. Step 5: Solve for x
    x = 7,437,188.94/3,122.94
  6. Step 6: Final answer
    x = 2,381.47

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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.