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Finding the Fourth Proportional to 11,422.56, 17,133.84 and 3,214.56

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Solution

The fourth proportional to 11,422.56, 17,133.84 and 3,214.56 is: 4,821.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,422.56 : 17,133.84 = 3,214.56 : x
  2. Step 2: Convert to fraction form
    11,422.56/17,133.84 = 3,214.56/x
  3. Step 3: Cross multiply
    11,422.56x = 17,133.84 × 3,214.56
  4. Step 4: Simplify right side
    11,422.56x = 55,077,756.71
  5. Step 5: Solve for x
    x = 55,077,756.71/11,422.56
  6. Step 6: Final answer
    x = 4,821.84

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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.