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Finding the Fourth Proportional to 2,191.68, 3,288.06 and 2,011.68

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Solution

The fourth proportional to 2,191.68, 3,288.06 and 2,011.68 is: 3,018.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.68 : 3,288.06 = 2,011.68 : x
  2. Step 2: Convert to fraction form
    2,191.68/3,288.06 = 2,011.68/x
  3. Step 3: Cross multiply
    2,191.68x = 3,288.06 × 2,011.68
  4. Step 4: Simplify right side
    2,191.68x = 6,614,524.54
  5. Step 5: Solve for x
    x = 6,614,524.54/2,191.68
  6. Step 6: Final answer
    x = 3,018.02

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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.