Home / 2,223.96-3,069.08-1,229.20

Finding the Fourth Proportional to 2,223.96, 3,069.08 and 1,229.20

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Solution

The fourth proportional to 2,223.96, 3,069.08 and 1,229.20 is: 1,696.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.96 : 3,069.08 = 1,229.20 : x
  2. Step 2: Convert to fraction form
    2,223.96/3,069.08 = 1,229.20/x
  3. Step 3: Cross multiply
    2,223.96x = 3,069.08 × 1,229.20
  4. Step 4: Simplify right side
    2,223.96x = 3,772,513.14
  5. Step 5: Solve for x
    x = 3,772,513.14/2,223.96
  6. Step 6: Final answer
    x = 1,696.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.