Home / 2,106.20-2,906.44-1,174.76

Finding the Fourth Proportional to 2,106.20, 2,906.44 and 1,174.76

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Solution

The fourth proportional to 2,106.20, 2,906.44 and 1,174.76 is: 1,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.20 : 2,906.44 = 1,174.76 : x
  2. Step 2: Convert to fraction form
    2,106.20/2,906.44 = 1,174.76/x
  3. Step 3: Cross multiply
    2,106.20x = 2,906.44 × 1,174.76
  4. Step 4: Simplify right side
    2,106.20x = 3,414,369.45
  5. Step 5: Solve for x
    x = 3,414,369.45/2,106.20
  6. Step 6: Final answer
    x = 1,621.10

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Half scale
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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.