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Finding the Fourth Proportional to 4,821.15, 7,219.94 and 4,353.68

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Solution

The fourth proportional to 4,821.15, 7,219.94 and 4,353.68 is: 6,519.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,821.15 : 7,219.94 = 4,353.68 : x
  2. Step 2: Convert to fraction form
    4,821.15/7,219.94 = 4,353.68/x
  3. Step 3: Cross multiply
    4,821.15x = 7,219.94 × 4,353.68
  4. Step 4: Simplify right side
    4,821.15x = 31,433,304.66
  5. Step 5: Solve for x
    x = 31,433,304.66/4,821.15
  6. Step 6: Final answer
    x = 6,519.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.