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Finding the Fourth Proportional to 7,661.13, 11,485.86 and 3,961.00

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Solution

The fourth proportional to 7,661.13, 11,485.86 and 3,961.00 is: 5,938.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.13 : 11,485.86 = 3,961.00 : x
  2. Step 2: Convert to fraction form
    7,661.13/11,485.86 = 3,961.00/x
  3. Step 3: Cross multiply
    7,661.13x = 11,485.86 × 3,961.00
  4. Step 4: Simplify right side
    7,661.13x = 45,495,502.10
  5. Step 5: Solve for x
    x = 45,495,502.10/7,661.13
  6. Step 6: Final answer
    x = 5,938.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.