Home / 2,106.20-3,160.80-807.66

Finding the Fourth Proportional to 2,106.20, 3,160.80 and 807.66

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Solution

The fourth proportional to 2,106.20, 3,160.80 and 807.66 is: 1,212.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.20 : 3,160.80 = 807.66 : x
  2. Step 2: Convert to fraction form
    2,106.20/3,160.80 = 807.66/x
  3. Step 3: Cross multiply
    2,106.20x = 3,160.80 × 807.66
  4. Step 4: Simplify right side
    2,106.20x = 2,552,851.73
  5. Step 5: Solve for x
    x = 2,552,851.73/2,106.20
  6. Step 6: Final answer
    x = 1,212.07

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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.