Home / 2,217.02-3,323.67-919.40

Finding the Fourth Proportional to 2,217.02, 3,323.67 and 919.40

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Solution

The fourth proportional to 2,217.02, 3,323.67 and 919.40 is: 1,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.02 : 3,323.67 = 919.40 : x
  2. Step 2: Convert to fraction form
    2,217.02/3,323.67 = 919.40/x
  3. Step 3: Cross multiply
    2,217.02x = 3,323.67 × 919.40
  4. Step 4: Simplify right side
    2,217.02x = 3,055,782.20
  5. Step 5: Solve for x
    x = 3,055,782.20/2,217.02
  6. Step 6: Final answer
    x = 1,378.33

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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.