Home / 8,173.78-11,285.56-6,383.28

Finding the Fourth Proportional to 8,173.78, 11,285.56 and 6,383.28

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Solution

The fourth proportional to 8,173.78, 11,285.56 and 6,383.28 is: 8,813.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,173.78 : 11,285.56 = 6,383.28 : x
  2. Step 2: Convert to fraction form
    8,173.78/11,285.56 = 6,383.28/x
  3. Step 3: Cross multiply
    8,173.78x = 11,285.56 × 6,383.28
  4. Step 4: Simplify right side
    8,173.78x = 72,038,889.44
  5. Step 5: Solve for x
    x = 72,038,889.44/8,173.78
  6. Step 6: Final answer
    x = 8,813.41

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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.