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Finding the Fourth Proportional to 6,419.73, 9,630.90 and 3,647.73

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Solution

The fourth proportional to 6,419.73, 9,630.90 and 3,647.73 is: 5,472.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.73 : 9,630.90 = 3,647.73 : x
  2. Step 2: Convert to fraction form
    6,419.73/9,630.90 = 3,647.73/x
  3. Step 3: Cross multiply
    6,419.73x = 9,630.90 × 3,647.73
  4. Step 4: Simplify right side
    6,419.73x = 35,130,922.86
  5. Step 5: Solve for x
    x = 35,130,922.86/6,419.73
  6. Step 6: Final answer
    x = 5,472.34

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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.