Home / 2,820.20-4,220.70-2,474.60

Finding the Fourth Proportional to 2,820.20, 4,220.70 and 2,474.60

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Solution

The fourth proportional to 2,820.20, 4,220.70 and 2,474.60 is: 3,703.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.20 : 4,220.70 = 2,474.60 : x
  2. Step 2: Convert to fraction form
    2,820.20/4,220.70 = 2,474.60/x
  3. Step 3: Cross multiply
    2,820.20x = 4,220.70 × 2,474.60
  4. Step 4: Simplify right side
    2,820.20x = 10,444,544.22
  5. Step 5: Solve for x
    x = 10,444,544.22/2,820.20
  6. Step 6: Final answer
    x = 3,703.48

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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.