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Finding the Fourth Proportional to 6,630.55, 9,150.21 and 3,646.42

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Solution

The fourth proportional to 6,630.55, 9,150.21 and 3,646.42 is: 5,032.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.55 : 9,150.21 = 3,646.42 : x
  2. Step 2: Convert to fraction form
    6,630.55/9,150.21 = 3,646.42/x
  3. Step 3: Cross multiply
    6,630.55x = 9,150.21 × 3,646.42
  4. Step 4: Simplify right side
    6,630.55x = 33,365,485.87
  5. Step 5: Solve for x
    x = 33,365,485.87/6,630.55
  6. Step 6: Final answer
    x = 5,032.09

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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.