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Finding the Fourth Proportional to 6,214.50, 8,576.01 and 3,420

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Solution

The fourth proportional to 6,214.50, 8,576.01 and 3,420 is: 4,719.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,214.50 : 8,576.01 = 3,420 : x
  2. Step 2: Convert to fraction form
    6,214.50/8,576.01 = 3,420/x
  3. Step 3: Cross multiply
    6,214.50x = 8,576.01 × 3,420
  4. Step 4: Simplify right side
    6,214.50x = 29,329,954.20
  5. Step 5: Solve for x
    x = 29,329,954.20/6,214.50
  6. Step 6: Final answer
    x = 4,719.60

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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.