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Finding the Fourth Proportional to 11,203.91, 16,808.58 and 3,412.71

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Solution

The fourth proportional to 11,203.91, 16,808.58 and 3,412.71 is: 5,119.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,203.91 : 16,808.58 = 3,412.71 : x
  2. Step 2: Convert to fraction form
    11,203.91/16,808.58 = 3,412.71/x
  3. Step 3: Cross multiply
    11,203.91x = 16,808.58 × 3,412.71
  4. Step 4: Simplify right side
    11,203.91x = 57,362,809.05
  5. Step 5: Solve for x
    x = 57,362,809.05/11,203.91
  6. Step 6: Final answer
    x = 5,119.89

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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.