Home / 2,047.20-3,072.78-1,226.40

Finding the Fourth Proportional to 2,047.20, 3,072.78 and 1,226.40

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Solution

The fourth proportional to 2,047.20, 3,072.78 and 1,226.40 is: 1,840.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,047.20 : 3,072.78 = 1,226.40 : x
  2. Step 2: Convert to fraction form
    2,047.20/3,072.78 = 1,226.40/x
  3. Step 3: Cross multiply
    2,047.20x = 3,072.78 × 1,226.40
  4. Step 4: Simplify right side
    2,047.20x = 3,768,457.39
  5. Step 5: Solve for x
    x = 3,768,457.39/2,047.20
  6. Step 6: Final answer
    x = 1,840.79

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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.