Home / 2,151.16-3,226.04-1,328.20

Finding the Fourth Proportional to 2,151.16, 3,226.04 and 1,328.20

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Solution

The fourth proportional to 2,151.16, 3,226.04 and 1,328.20 is: 1,991.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.16 : 3,226.04 = 1,328.20 : x
  2. Step 2: Convert to fraction form
    2,151.16/3,226.04 = 1,328.20/x
  3. Step 3: Cross multiply
    2,151.16x = 3,226.04 × 1,328.20
  4. Step 4: Simplify right side
    2,151.16x = 4,284,826.33
  5. Step 5: Solve for x
    x = 4,284,826.33/2,151.16
  6. Step 6: Final answer
    x = 1,991.87

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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.