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Finding the Fourth Proportional to 8,701.31, 13,040.79 and 3,954

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Solution

The fourth proportional to 8,701.31, 13,040.79 and 3,954 is: 5,925.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.31 : 13,040.79 = 3,954 : x
  2. Step 2: Convert to fraction form
    8,701.31/13,040.79 = 3,954/x
  3. Step 3: Cross multiply
    8,701.31x = 13,040.79 × 3,954
  4. Step 4: Simplify right side
    8,701.31x = 51,563,283.66
  5. Step 5: Solve for x
    x = 51,563,283.66/8,701.31
  6. Step 6: Final answer
    x = 5,925.92

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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.