Home / 2,106.60-3,160.31-807.97

Finding the Fourth Proportional to 2,106.60, 3,160.31 and 807.97

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Solution

The fourth proportional to 2,106.60, 3,160.31 and 807.97 is: 1,212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.60 : 3,160.31 = 807.97 : x
  2. Step 2: Convert to fraction form
    2,106.60/3,160.31 = 807.97/x
  3. Step 3: Cross multiply
    2,106.60x = 3,160.31 × 807.97
  4. Step 4: Simplify right side
    2,106.60x = 2,553,431.63
  5. Step 5: Solve for x
    x = 2,553,431.63/2,106.60
  6. Step 6: Final answer
    x = 1,212.11

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1.5x scale

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.