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Finding the Fourth Proportional to 4,861.86, 7,292.79 and 1,399.11

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Solution

The fourth proportional to 4,861.86, 7,292.79 and 1,399.11 is: 2,098.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,861.86 : 7,292.79 = 1,399.11 : x
  2. Step 2: Convert to fraction form
    4,861.86/7,292.79 = 1,399.11/x
  3. Step 3: Cross multiply
    4,861.86x = 7,292.79 × 1,399.11
  4. Step 4: Simplify right side
    4,861.86x = 10,203,415.42
  5. Step 5: Solve for x
    x = 10,203,415.42/4,861.86
  6. Step 6: Final answer
    x = 2,098.67

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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.