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Finding the Fourth Proportional to 8,381.34, 11,562.21 and 5,396.22

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Solution

The fourth proportional to 8,381.34, 11,562.21 and 5,396.22 is: 7,444.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,381.34 : 11,562.21 = 5,396.22 : x
  2. Step 2: Convert to fraction form
    8,381.34/11,562.21 = 5,396.22/x
  3. Step 3: Cross multiply
    8,381.34x = 11,562.21 × 5,396.22
  4. Step 4: Simplify right side
    8,381.34x = 62,392,228.85
  5. Step 5: Solve for x
    x = 62,392,228.85/8,381.34
  6. Step 6: Final answer
    x = 7,444.18

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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.