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Finding the Fourth Proportional to 11,189.25, 16,783.88 and 2,981.25

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Solution

The fourth proportional to 11,189.25, 16,783.88 and 2,981.25 is: 4,471.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.25 : 16,783.88 = 2,981.25 : x
  2. Step 2: Convert to fraction form
    11,189.25/16,783.88 = 2,981.25/x
  3. Step 3: Cross multiply
    11,189.25x = 16,783.88 × 2,981.25
  4. Step 4: Simplify right side
    11,189.25x = 50,036,927.34
  5. Step 5: Solve for x
    x = 50,036,927.34/11,189.25
  6. Step 6: Final answer
    x = 4,471.88

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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.