Home / 3,190.63-4,786.40-999.53

Finding the Fourth Proportional to 3,190.63, 4,786.40 and 999.53

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Solution

The fourth proportional to 3,190.63, 4,786.40 and 999.53 is: 1,499.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.63 : 4,786.40 = 999.53 : x
  2. Step 2: Convert to fraction form
    3,190.63/4,786.40 = 999.53/x
  3. Step 3: Cross multiply
    3,190.63x = 4,786.40 × 999.53
  4. Step 4: Simplify right side
    3,190.63x = 4,784,135.26
  5. Step 5: Solve for x
    x = 4,784,135.26/3,190.63
  6. Step 6: Final answer
    x = 1,499.43

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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.