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Finding the Fourth Proportional to 3,190.01, 4,784.40 and 998.55

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Solution

The fourth proportional to 3,190.01, 4,784.40 and 998.55 is: 1,497.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.01 : 4,784.40 = 998.55 : x
  2. Step 2: Convert to fraction form
    3,190.01/4,784.40 = 998.55/x
  3. Step 3: Cross multiply
    3,190.01x = 4,784.40 × 998.55
  4. Step 4: Simplify right side
    3,190.01x = 4,777,462.62
  5. Step 5: Solve for x
    x = 4,777,462.62/3,190.01
  6. Step 6: Final answer
    x = 1,497.63

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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.