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Finding the Fourth Proportional to 9,152.99, 12,629.48 and 7,892.73

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Solution

The fourth proportional to 9,152.99, 12,629.48 and 7,892.73 is: 10,890.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,152.99 : 12,629.48 = 7,892.73 : x
  2. Step 2: Convert to fraction form
    9,152.99/12,629.48 = 7,892.73/x
  3. Step 3: Cross multiply
    9,152.99x = 12,629.48 × 7,892.73
  4. Step 4: Simplify right side
    9,152.99x = 99,681,075.68
  5. Step 5: Solve for x
    x = 99,681,075.68/9,152.99
  6. Step 6: Final answer
    x = 10,890.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.