Home / 3,226.83-4,840.85-1,280.40

Finding the Fourth Proportional to 3,226.83, 4,840.85 and 1,280.40

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Solution

The fourth proportional to 3,226.83, 4,840.85 and 1,280.40 is: 1,920.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,226.83 : 4,840.85 = 1,280.40 : x
  2. Step 2: Convert to fraction form
    3,226.83/4,840.85 = 1,280.40/x
  3. Step 3: Cross multiply
    3,226.83x = 4,840.85 × 1,280.40
  4. Step 4: Simplify right side
    3,226.83x = 6,198,224.34
  5. Step 5: Solve for x
    x = 6,198,224.34/3,226.83
  6. Step 6: Final answer
    x = 1,920.84

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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.