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Finding the Fourth Proportional to 7,907.34, 11,868.19 and 4,212.68

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Solution

The fourth proportional to 7,907.34, 11,868.19 and 4,212.68 is: 6,322.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.34 : 11,868.19 = 4,212.68 : x
  2. Step 2: Convert to fraction form
    7,907.34/11,868.19 = 4,212.68/x
  3. Step 3: Cross multiply
    7,907.34x = 11,868.19 × 4,212.68
  4. Step 4: Simplify right side
    7,907.34x = 49,996,806.24
  5. Step 5: Solve for x
    x = 49,996,806.24/7,907.34
  6. Step 6: Final answer
    x = 6,322.84

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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.