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Finding the Fourth Proportional to 8,630.36, 11,917.37 and 8,187.50

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Solution

The fourth proportional to 8,630.36, 11,917.37 and 8,187.50 is: 11,305.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.36 : 11,917.37 = 8,187.50 : x
  2. Step 2: Convert to fraction form
    8,630.36/11,917.37 = 8,187.50/x
  3. Step 3: Cross multiply
    8,630.36x = 11,917.37 × 8,187.50
  4. Step 4: Simplify right side
    8,630.36x = 97,573,466.88
  5. Step 5: Solve for x
    x = 97,573,466.88/8,630.36
  6. Step 6: Final answer
    x = 11,305.84

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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.