Home / 2,631.80-3,950.45-1,939.25

Finding the Fourth Proportional to 2,631.80, 3,950.45 and 1,939.25

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Solution

The fourth proportional to 2,631.80, 3,950.45 and 1,939.25 is: 2,910.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.80 : 3,950.45 = 1,939.25 : x
  2. Step 2: Convert to fraction form
    2,631.80/3,950.45 = 1,939.25/x
  3. Step 3: Cross multiply
    2,631.80x = 3,950.45 × 1,939.25
  4. Step 4: Simplify right side
    2,631.80x = 7,660,880.71
  5. Step 5: Solve for x
    x = 7,660,880.71/2,631.80
  6. Step 6: Final answer
    x = 2,910.90

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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.