Home / 2,220.40-3,334.20-1,608.40

Finding the Fourth Proportional to 2,220.40, 3,334.20 and 1,608.40

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Solution

The fourth proportional to 2,220.40, 3,334.20 and 1,608.40 is: 2,415.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.40 : 3,334.20 = 1,608.40 : x
  2. Step 2: Convert to fraction form
    2,220.40/3,334.20 = 1,608.40/x
  3. Step 3: Cross multiply
    2,220.40x = 3,334.20 × 1,608.40
  4. Step 4: Simplify right side
    2,220.40x = 5,362,727.28
  5. Step 5: Solve for x
    x = 5,362,727.28/2,220.40
  6. Step 6: Final answer
    x = 2,415.21

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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.