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Finding the Fourth Proportional to 5,891.38, 8,124.07 and 3,901.21

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Solution

The fourth proportional to 5,891.38, 8,124.07 and 3,901.21 is: 5,379.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,891.38 : 8,124.07 = 3,901.21 : x
  2. Step 2: Convert to fraction form
    5,891.38/8,124.07 = 3,901.21/x
  3. Step 3: Cross multiply
    5,891.38x = 8,124.07 × 3,901.21
  4. Step 4: Simplify right side
    5,891.38x = 31,693,662.50
  5. Step 5: Solve for x
    x = 31,693,662.50/5,891.38
  6. Step 6: Final answer
    x = 5,379.67

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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.