Home / 3,190.72-4,401.84-1,948

Finding the Fourth Proportional to 3,190.72, 4,401.84 and 1,948

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Solution

The fourth proportional to 3,190.72, 4,401.84 and 1,948 is: 2,687.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.72 : 4,401.84 = 1,948 : x
  2. Step 2: Convert to fraction form
    3,190.72/4,401.84 = 1,948/x
  3. Step 3: Cross multiply
    3,190.72x = 4,401.84 × 1,948
  4. Step 4: Simplify right side
    3,190.72x = 8,574,784.32
  5. Step 5: Solve for x
    x = 8,574,784.32/3,190.72
  6. Step 6: Final answer
    x = 2,687.41

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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.