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Finding the Fourth Proportional to 8,285.76, 11,431.44 and 4,746.42

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Solution

The fourth proportional to 8,285.76, 11,431.44 and 4,746.42 is: 6,548.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,285.76 : 11,431.44 = 4,746.42 : x
  2. Step 2: Convert to fraction form
    8,285.76/11,431.44 = 4,746.42/x
  3. Step 3: Cross multiply
    8,285.76x = 11,431.44 × 4,746.42
  4. Step 4: Simplify right side
    8,285.76x = 54,258,415.44
  5. Step 5: Solve for x
    x = 54,258,415.44/8,285.76
  6. Step 6: Final answer
    x = 6,548.39

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Double scale
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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.