Home / 2,168.25-3,253.36-919.19

Finding the Fourth Proportional to 2,168.25, 3,253.36 and 919.19

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Solution

The fourth proportional to 2,168.25, 3,253.36 and 919.19 is: 1,379.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.25 : 3,253.36 = 919.19 : x
  2. Step 2: Convert to fraction form
    2,168.25/3,253.36 = 919.19/x
  3. Step 3: Cross multiply
    2,168.25x = 3,253.36 × 919.19
  4. Step 4: Simplify right side
    2,168.25x = 2,990,439.71
  5. Step 5: Solve for x
    x = 2,990,439.71/2,168.25
  6. Step 6: Final answer
    x = 1,379.20

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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.