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Finding the Fourth Proportional to 9,905.44, 13,675.72 and 6,374.79

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Solution

The fourth proportional to 9,905.44, 13,675.72 and 6,374.79 is: 8,801.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.44 : 13,675.72 = 6,374.79 : x
  2. Step 2: Convert to fraction form
    9,905.44/13,675.72 = 6,374.79/x
  3. Step 3: Cross multiply
    9,905.44x = 13,675.72 × 6,374.79
  4. Step 4: Simplify right side
    9,905.44x = 87,179,843.10
  5. Step 5: Solve for x
    x = 87,179,843.10/9,905.44
  6. Step 6: Final answer
    x = 8,801.21

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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.