Home / 4,120.40-6,181.20-1,346.40

Finding the Fourth Proportional to 4,120.40, 6,181.20 and 1,346.40

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Solution

The fourth proportional to 4,120.40, 6,181.20 and 1,346.40 is: 2,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.40 : 6,181.20 = 1,346.40 : x
  2. Step 2: Convert to fraction form
    4,120.40/6,181.20 = 1,346.40/x
  3. Step 3: Cross multiply
    4,120.40x = 6,181.20 × 1,346.40
  4. Step 4: Simplify right side
    4,120.40x = 8,322,367.68
  5. Step 5: Solve for x
    x = 8,322,367.68/4,120.40
  6. Step 6: Final answer
    x = 2,019.80

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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.