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Finding the Fourth Proportional to 3,190.18, 4,783.47 and 998.32

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Solution

The fourth proportional to 3,190.18, 4,783.47 and 998.32 is: 1,496.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.18 : 4,783.47 = 998.32 : x
  2. Step 2: Convert to fraction form
    3,190.18/4,783.47 = 998.32/x
  3. Step 3: Cross multiply
    3,190.18x = 4,783.47 × 998.32
  4. Step 4: Simplify right side
    3,190.18x = 4,775,433.77
  5. Step 5: Solve for x
    x = 4,775,433.77/3,190.18
  6. Step 6: Final answer
    x = 1,496.92

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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.