Home / 3,940.79-5,900.75-2,378.70

Finding the Fourth Proportional to 3,940.79, 5,900.75 and 2,378.70

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Solution

The fourth proportional to 3,940.79, 5,900.75 and 2,378.70 is: 3,561.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.79 : 5,900.75 = 2,378.70 : x
  2. Step 2: Convert to fraction form
    3,940.79/5,900.75 = 2,378.70/x
  3. Step 3: Cross multiply
    3,940.79x = 5,900.75 × 2,378.70
  4. Step 4: Simplify right side
    3,940.79x = 14,036,111.05
  5. Step 5: Solve for x
    x = 14,036,111.05/3,940.79
  6. Step 6: Final answer
    x = 3,561.76

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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.