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Finding the Fourth Proportional to 8,355.78, 11,518.75 and 6,362.88

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Solution

The fourth proportional to 8,355.78, 11,518.75 and 6,362.88 is: 8,771.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,355.78 : 11,518.75 = 6,362.88 : x
  2. Step 2: Convert to fraction form
    8,355.78/11,518.75 = 6,362.88/x
  3. Step 3: Cross multiply
    8,355.78x = 11,518.75 × 6,362.88
  4. Step 4: Simplify right side
    8,355.78x = 73,292,424
  5. Step 5: Solve for x
    x = 73,292,424/8,355.78
  6. Step 6: Final answer
    x = 8,771.46

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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.