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Finding the Fourth Proportional to 8,420.02, 11,620.68 and 4,836.10

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Solution

The fourth proportional to 8,420.02, 11,620.68 and 4,836.10 is: 6,674.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.02 : 11,620.68 = 4,836.10 : x
  2. Step 2: Convert to fraction form
    8,420.02/11,620.68 = 4,836.10/x
  3. Step 3: Cross multiply
    8,420.02x = 11,620.68 × 4,836.10
  4. Step 4: Simplify right side
    8,420.02x = 56,198,770.55
  5. Step 5: Solve for x
    x = 56,198,770.55/8,420.02
  6. Step 6: Final answer
    x = 6,674.42

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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.