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Finding the Fourth Proportional to 3,907.81, 5,861.41 and 1,567.72

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Solution

The fourth proportional to 3,907.81, 5,861.41 and 1,567.72 is: 2,351.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.81 : 5,861.41 = 1,567.72 : x
  2. Step 2: Convert to fraction form
    3,907.81/5,861.41 = 1,567.72/x
  3. Step 3: Cross multiply
    3,907.81x = 5,861.41 × 1,567.72
  4. Step 4: Simplify right side
    3,907.81x = 9,189,049.69
  5. Step 5: Solve for x
    x = 9,189,049.69/3,907.81
  6. Step 6: Final answer
    x = 2,351.46

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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.