Home / 3,190.68-4,763.20-2,775.60

Finding the Fourth Proportional to 3,190.68, 4,763.20 and 2,775.60

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Solution

The fourth proportional to 3,190.68, 4,763.20 and 2,775.60 is: 4,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.68 : 4,763.20 = 2,775.60 : x
  2. Step 2: Convert to fraction form
    3,190.68/4,763.20 = 2,775.60/x
  3. Step 3: Cross multiply
    3,190.68x = 4,763.20 × 2,775.60
  4. Step 4: Simplify right side
    3,190.68x = 13,220,737.92
  5. Step 5: Solve for x
    x = 13,220,737.92/3,190.68
  6. Step 6: Final answer
    x = 4,143.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.