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Finding the Fourth Proportional to 6,140.69, 8,472.08 and 3,749.79

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Solution

The fourth proportional to 6,140.69, 8,472.08 and 3,749.79 is: 5,173.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,140.69 : 8,472.08 = 3,749.79 : x
  2. Step 2: Convert to fraction form
    6,140.69/8,472.08 = 3,749.79/x
  3. Step 3: Cross multiply
    6,140.69x = 8,472.08 × 3,749.79
  4. Step 4: Simplify right side
    6,140.69x = 31,768,540.92
  5. Step 5: Solve for x
    x = 31,768,540.92/6,140.69
  6. Step 6: Final answer
    x = 5,173.44

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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.