Home / 4,120.64-6,180.15-2,639.18

Finding the Fourth Proportional to 4,120.64, 6,180.15 and 2,639.18

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Solution

The fourth proportional to 4,120.64, 6,180.15 and 2,639.18 is: 3,958.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.64 : 6,180.15 = 2,639.18 : x
  2. Step 2: Convert to fraction form
    4,120.64/6,180.15 = 2,639.18/x
  3. Step 3: Cross multiply
    4,120.64x = 6,180.15 × 2,639.18
  4. Step 4: Simplify right side
    4,120.64x = 16,310,528.28
  5. Step 5: Solve for x
    x = 16,310,528.28/4,120.64
  6. Step 6: Final answer
    x = 3,958.25

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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.