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Finding the Fourth Proportional to 7,907.68, 10,912.67 and 4,322.74

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Solution

The fourth proportional to 7,907.68, 10,912.67 and 4,322.74 is: 5,965.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.68 : 10,912.67 = 4,322.74 : x
  2. Step 2: Convert to fraction form
    7,907.68/10,912.67 = 4,322.74/x
  3. Step 3: Cross multiply
    7,907.68x = 10,912.67 × 4,322.74
  4. Step 4: Simplify right side
    7,907.68x = 47,172,635.12
  5. Step 5: Solve for x
    x = 47,172,635.12/7,907.68
  6. Step 6: Final answer
    x = 5,965.42

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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.