Home / 2,115.16-3,176.37-1,298.23

Finding the Fourth Proportional to 2,115.16, 3,176.37 and 1,298.23

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Solution

The fourth proportional to 2,115.16, 3,176.37 and 1,298.23 is: 1,949.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.16 : 3,176.37 = 1,298.23 : x
  2. Step 2: Convert to fraction form
    2,115.16/3,176.37 = 1,298.23/x
  3. Step 3: Cross multiply
    2,115.16x = 3,176.37 × 1,298.23
  4. Step 4: Simplify right side
    2,115.16x = 4,123,636.45
  5. Step 5: Solve for x
    x = 4,123,636.45/2,115.16
  6. Step 6: Final answer
    x = 1,949.57

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Double scale
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Similar ratio
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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.