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Finding the Fourth Proportional to 6,396.89, 8,827.96 and 3,708.21

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Solution

The fourth proportional to 6,396.89, 8,827.96 and 3,708.21 is: 5,117.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,396.89 : 8,827.96 = 3,708.21 : x
  2. Step 2: Convert to fraction form
    6,396.89/8,827.96 = 3,708.21/x
  3. Step 3: Cross multiply
    6,396.89x = 8,827.96 × 3,708.21
  4. Step 4: Simplify right side
    6,396.89x = 32,735,885.41
  5. Step 5: Solve for x
    x = 32,735,885.41/6,396.89
  6. Step 6: Final answer
    x = 5,117.47

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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.