Home / 2,625.39-3,929.58-1,931.91

Finding the Fourth Proportional to 2,625.39, 3,929.58 and 1,931.91

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Solution

The fourth proportional to 2,625.39, 3,929.58 and 1,931.91 is: 2,891.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,625.39 : 3,929.58 = 1,931.91 : x
  2. Step 2: Convert to fraction form
    2,625.39/3,929.58 = 1,931.91/x
  3. Step 3: Cross multiply
    2,625.39x = 3,929.58 × 1,931.91
  4. Step 4: Simplify right side
    2,625.39x = 7,591,594.90
  5. Step 5: Solve for x
    x = 7,591,594.90/2,625.39
  6. Step 6: Final answer
    x = 2,891.61

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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.