Home / 2,778.35-4,168.70-1,217.55

Finding the Fourth Proportional to 2,778.35, 4,168.70 and 1,217.55

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Solution

The fourth proportional to 2,778.35, 4,168.70 and 1,217.55 is: 1,826.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.35 : 4,168.70 = 1,217.55 : x
  2. Step 2: Convert to fraction form
    2,778.35/4,168.70 = 1,217.55/x
  3. Step 3: Cross multiply
    2,778.35x = 4,168.70 × 1,217.55
  4. Step 4: Simplify right side
    2,778.35x = 5,075,594.60
  5. Step 5: Solve for x
    x = 5,075,594.60/2,778.35
  6. Step 6: Final answer
    x = 1,826.84

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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.