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Finding the Fourth Proportional to 7,907.81, 11,857.79 and 2,641.01

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Solution

The fourth proportional to 7,907.81, 11,857.79 and 2,641.01 is: 3,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.81 : 11,857.79 = 2,641.01 : x
  2. Step 2: Convert to fraction form
    7,907.81/11,857.79 = 2,641.01/x
  3. Step 3: Cross multiply
    7,907.81x = 11,857.79 × 2,641.01
  4. Step 4: Simplify right side
    7,907.81x = 31,316,469.47
  5. Step 5: Solve for x
    x = 31,316,469.47/7,907.81
  6. Step 6: Final answer
    x = 3,960.20

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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.