Home / 3,209.74-4,812.78-1,260.88

Finding the Fourth Proportional to 3,209.74, 4,812.78 and 1,260.88

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Solution

The fourth proportional to 3,209.74, 4,812.78 and 1,260.88 is: 1,890.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.74 : 4,812.78 = 1,260.88 : x
  2. Step 2: Convert to fraction form
    3,209.74/4,812.78 = 1,260.88/x
  3. Step 3: Cross multiply
    3,209.74x = 4,812.78 × 1,260.88
  4. Step 4: Simplify right side
    3,209.74x = 6,068,338.05
  5. Step 5: Solve for x
    x = 6,068,338.05/3,209.74
  6. Step 6: Final answer
    x = 1,890.60

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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.