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Finding the Fourth Proportional to 8,438.22, 11,644.74 and 4,712.22

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Solution

The fourth proportional to 8,438.22, 11,644.74 and 4,712.22 is: 6,502.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.22 : 11,644.74 = 4,712.22 : x
  2. Step 2: Convert to fraction form
    8,438.22/11,644.74 = 4,712.22/x
  3. Step 3: Cross multiply
    8,438.22x = 11,644.74 × 4,712.22
  4. Step 4: Simplify right side
    8,438.22x = 54,872,576.72
  5. Step 5: Solve for x
    x = 54,872,576.72/8,438.22
  6. Step 6: Final answer
    x = 6,502.86

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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.