Home / 2,155.24-3,229.38-2,145.16

Finding the Fourth Proportional to 2,155.24, 3,229.38 and 2,145.16

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Solution

The fourth proportional to 2,155.24, 3,229.38 and 2,145.16 is: 3,214.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.24 : 3,229.38 = 2,145.16 : x
  2. Step 2: Convert to fraction form
    2,155.24/3,229.38 = 2,145.16/x
  3. Step 3: Cross multiply
    2,155.24x = 3,229.38 × 2,145.16
  4. Step 4: Simplify right side
    2,155.24x = 6,927,536.80
  5. Step 5: Solve for x
    x = 6,927,536.80/2,155.24
  6. Step 6: Final answer
    x = 3,214.28

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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.