Home / 3,190.70-4,783.20-1,242.45

Finding the Fourth Proportional to 3,190.70, 4,783.20 and 1,242.45

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Solution

The fourth proportional to 3,190.70, 4,783.20 and 1,242.45 is: 1,862.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.70 : 4,783.20 = 1,242.45 : x
  2. Step 2: Convert to fraction form
    3,190.70/4,783.20 = 1,242.45/x
  3. Step 3: Cross multiply
    3,190.70x = 4,783.20 × 1,242.45
  4. Step 4: Simplify right side
    3,190.70x = 5,942,886.84
  5. Step 5: Solve for x
    x = 5,942,886.84/3,190.70
  6. Step 6: Final answer
    x = 1,862.57

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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.