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Finding the Fourth Proportional to 8,791.40, 13,189.03 and 2,551.50

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Solution

The fourth proportional to 8,791.40, 13,189.03 and 2,551.50 is: 3,827.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.40 : 13,189.03 = 2,551.50 : x
  2. Step 2: Convert to fraction form
    8,791.40/13,189.03 = 2,551.50/x
  3. Step 3: Cross multiply
    8,791.40x = 13,189.03 × 2,551.50
  4. Step 4: Simplify right side
    8,791.40x = 33,651,803.67
  5. Step 5: Solve for x
    x = 33,651,803.67/8,791.40
  6. Step 6: Final answer
    x = 3,827.81

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1.5x scale

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.