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Finding the Fourth Proportional to 6,339.42, 8,749.26 and 3,984.74

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Solution

The fourth proportional to 6,339.42, 8,749.26 and 3,984.74 is: 5,499.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,339.42 : 8,749.26 = 3,984.74 : x
  2. Step 2: Convert to fraction form
    6,339.42/8,749.26 = 3,984.74/x
  3. Step 3: Cross multiply
    6,339.42x = 8,749.26 × 3,984.74
  4. Step 4: Simplify right side
    6,339.42x = 34,863,526.29
  5. Step 5: Solve for x
    x = 34,863,526.29/6,339.42
  6. Step 6: Final answer
    x = 5,499.48

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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.