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Finding the Fourth Proportional to 8,907.12, 13,351.05 and 3,969.99

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Solution

The fourth proportional to 8,907.12, 13,351.05 and 3,969.99 is: 5,950.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.12 : 13,351.05 = 3,969.99 : x
  2. Step 2: Convert to fraction form
    8,907.12/13,351.05 = 3,969.99/x
  3. Step 3: Cross multiply
    8,907.12x = 13,351.05 × 3,969.99
  4. Step 4: Simplify right side
    8,907.12x = 53,003,534.99
  5. Step 5: Solve for x
    x = 53,003,534.99/8,907.12
  6. Step 6: Final answer
    x = 5,950.69

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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.