Home / 2,986.94-4,123.70-1,995.50

Finding the Fourth Proportional to 2,986.94, 4,123.70 and 1,995.50

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Solution

The fourth proportional to 2,986.94, 4,123.70 and 1,995.50 is: 2,754.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.94 : 4,123.70 = 1,995.50 : x
  2. Step 2: Convert to fraction form
    2,986.94/4,123.70 = 1,995.50/x
  3. Step 3: Cross multiply
    2,986.94x = 4,123.70 × 1,995.50
  4. Step 4: Simplify right side
    2,986.94x = 8,228,812.75
  5. Step 5: Solve for x
    x = 8,228,812.75/2,986.94
  6. Step 6: Final answer
    x = 2,754.94

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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.