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Finding the Fourth Proportional to 8,783.80, 13,171.20 and 3,850.72

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Solution

The fourth proportional to 8,783.80, 13,171.20 and 3,850.72 is: 5,774.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.80 : 13,171.20 = 3,850.72 : x
  2. Step 2: Convert to fraction form
    8,783.80/13,171.20 = 3,850.72/x
  3. Step 3: Cross multiply
    8,783.80x = 13,171.20 × 3,850.72
  4. Step 4: Simplify right side
    8,783.80x = 50,718,603.26
  5. Step 5: Solve for x
    x = 50,718,603.26/8,783.80
  6. Step 6: Final answer
    x = 5,774.11

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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.