Home / 3,220.70-4,825.36-2,820.92

Finding the Fourth Proportional to 3,220.70, 4,825.36 and 2,820.92

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Solution

The fourth proportional to 3,220.70, 4,825.36 and 2,820.92 is: 4,226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.70 : 4,825.36 = 2,820.92 : x
  2. Step 2: Convert to fraction form
    3,220.70/4,825.36 = 2,820.92/x
  3. Step 3: Cross multiply
    3,220.70x = 4,825.36 × 2,820.92
  4. Step 4: Simplify right side
    3,220.70x = 13,611,933.93
  5. Step 5: Solve for x
    x = 13,611,933.93/3,220.70
  6. Step 6: Final answer
    x = 4,226.40

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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.