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Finding the Fourth Proportional to 6,308, 8,705.20 and 3,513.44

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Solution

The fourth proportional to 6,308, 8,705.20 and 3,513.44 is: 4,848.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,308 : 8,705.20 = 3,513.44 : x
  2. Step 2: Convert to fraction form
    6,308/8,705.20 = 3,513.44/x
  3. Step 3: Cross multiply
    6,308x = 8,705.20 × 3,513.44
  4. Step 4: Simplify right side
    6,308x = 30,585,197.89
  5. Step 5: Solve for x
    x = 30,585,197.89/6,308
  6. Step 6: Final answer
    x = 4,848.64

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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.