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Finding the Fourth Proportional to 8,695, 11,999.10 and 4,969.72

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Solution

The fourth proportional to 8,695, 11,999.10 and 4,969.72 is: 6,858.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695 : 11,999.10 = 4,969.72 : x
  2. Step 2: Convert to fraction form
    8,695/11,999.10 = 4,969.72/x
  3. Step 3: Cross multiply
    8,695x = 11,999.10 × 4,969.72
  4. Step 4: Simplify right side
    8,695x = 59,632,167.25
  5. Step 5: Solve for x
    x = 59,632,167.25/8,695
  6. Step 6: Final answer
    x = 6,858.21

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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.