Home / 2,137.12-3,208.38-1,491.28

Finding the Fourth Proportional to 2,137.12, 3,208.38 and 1,491.28

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Solution

The fourth proportional to 2,137.12, 3,208.38 and 1,491.28 is: 2,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.12 : 3,208.38 = 1,491.28 : x
  2. Step 2: Convert to fraction form
    2,137.12/3,208.38 = 1,491.28/x
  3. Step 3: Cross multiply
    2,137.12x = 3,208.38 × 1,491.28
  4. Step 4: Simplify right side
    2,137.12x = 4,784,592.93
  5. Step 5: Solve for x
    x = 4,784,592.93/2,137.12
  6. Step 6: Final answer
    x = 2,238.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.