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Finding the Fourth Proportional to 3,381.86, 4,667.02 and 1,889.88

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Solution

The fourth proportional to 3,381.86, 4,667.02 and 1,889.88 is: 2,608.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.86 : 4,667.02 = 1,889.88 : x
  2. Step 2: Convert to fraction form
    3,381.86/4,667.02 = 1,889.88/x
  3. Step 3: Cross multiply
    3,381.86x = 4,667.02 × 1,889.88
  4. Step 4: Simplify right side
    3,381.86x = 8,820,094.21
  5. Step 5: Solve for x
    x = 8,820,094.21/3,381.86
  6. Step 6: Final answer
    x = 2,608.06

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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.