Home / 3,078.20-4,611.36-1,775.72

Finding the Fourth Proportional to 3,078.20, 4,611.36 and 1,775.72

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Solution

The fourth proportional to 3,078.20, 4,611.36 and 1,775.72 is: 2,660.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.20 : 4,611.36 = 1,775.72 : x
  2. Step 2: Convert to fraction form
    3,078.20/4,611.36 = 1,775.72/x
  3. Step 3: Cross multiply
    3,078.20x = 4,611.36 × 1,775.72
  4. Step 4: Simplify right side
    3,078.20x = 8,188,484.18
  5. Step 5: Solve for x
    x = 8,188,484.18/3,078.20
  6. Step 6: Final answer
    x = 2,660.15

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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.