Home / 2,272.40-3,136.21-1,684.61

Finding the Fourth Proportional to 2,272.40, 3,136.21 and 1,684.61

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Solution

The fourth proportional to 2,272.40, 3,136.21 and 1,684.61 is: 2,324.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.40 : 3,136.21 = 1,684.61 : x
  2. Step 2: Convert to fraction form
    2,272.40/3,136.21 = 1,684.61/x
  3. Step 3: Cross multiply
    2,272.40x = 3,136.21 × 1,684.61
  4. Step 4: Simplify right side
    2,272.40x = 5,283,270.84
  5. Step 5: Solve for x
    x = 5,283,270.84/2,272.40
  6. Step 6: Final answer
    x = 2,324.98

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Half 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.