Home / 2,137.56-2,949.90-1,206.12

Finding the Fourth Proportional to 2,137.56, 2,949.90 and 1,206.12

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Solution

The fourth proportional to 2,137.56, 2,949.90 and 1,206.12 is: 1,664.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.56 : 2,949.90 = 1,206.12 : x
  2. Step 2: Convert to fraction form
    2,137.56/2,949.90 = 1,206.12/x
  3. Step 3: Cross multiply
    2,137.56x = 2,949.90 × 1,206.12
  4. Step 4: Simplify right side
    2,137.56x = 3,557,933.39
  5. Step 5: Solve for x
    x = 3,557,933.39/2,137.56
  6. Step 6: Final answer
    x = 1,664.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.