Home / 3,905.30-5,389.08-2,226.47

Finding the Fourth Proportional to 3,905.30, 5,389.08 and 2,226.47

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Solution

The fourth proportional to 3,905.30, 5,389.08 and 2,226.47 is: 3,072.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.30 : 5,389.08 = 2,226.47 : x
  2. Step 2: Convert to fraction form
    3,905.30/5,389.08 = 2,226.47/x
  3. Step 3: Cross multiply
    3,905.30x = 5,389.08 × 2,226.47
  4. Step 4: Simplify right side
    3,905.30x = 11,998,624.95
  5. Step 5: Solve for x
    x = 11,998,624.95/3,905.30
  6. Step 6: Final answer
    x = 3,072.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.