Home / 2,152.08-3,228.44-919.80

Finding the Fourth Proportional to 2,152.08, 3,228.44 and 919.80

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Solution

The fourth proportional to 2,152.08, 3,228.44 and 919.80 is: 1,379.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.08 : 3,228.44 = 919.80 : x
  2. Step 2: Convert to fraction form
    2,152.08/3,228.44 = 919.80/x
  3. Step 3: Cross multiply
    2,152.08x = 3,228.44 × 919.80
  4. Step 4: Simplify right side
    2,152.08x = 2,969,514.51
  5. Step 5: Solve for x
    x = 2,969,514.51/2,152.08
  6. Step 6: Final answer
    x = 1,379.83

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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.