Home / 2,152.32-3,229.58-919.39

Finding the Fourth Proportional to 2,152.32, 3,229.58 and 919.39

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Solution

The fourth proportional to 2,152.32, 3,229.58 and 919.39 is: 1,379.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.32 : 3,229.58 = 919.39 : x
  2. Step 2: Convert to fraction form
    2,152.32/3,229.58 = 919.39/x
  3. Step 3: Cross multiply
    2,152.32x = 3,229.58 × 919.39
  4. Step 4: Simplify right side
    2,152.32x = 2,969,261.02
  5. Step 5: Solve for x
    x = 2,969,261.02/2,152.32
  6. Step 6: Final answer
    x = 1,379.57

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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.