Home / 2,120.31-3,166.36-2,097.43

Finding the Fourth Proportional to 2,120.31, 3,166.36 and 2,097.43

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Solution

The fourth proportional to 2,120.31, 3,166.36 and 2,097.43 is: 3,132.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.31 : 3,166.36 = 2,097.43 : x
  2. Step 2: Convert to fraction form
    2,120.31/3,166.36 = 2,097.43/x
  3. Step 3: Cross multiply
    2,120.31x = 3,166.36 × 2,097.43
  4. Step 4: Simplify right side
    2,120.31x = 6,641,205.30
  5. Step 5: Solve for x
    x = 6,641,205.30/2,120.31
  6. Step 6: Final answer
    x = 3,132.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.