Home / 2,847.99-3,930.49-1,729.23

Finding the Fourth Proportional to 2,847.99, 3,930.49 and 1,729.23

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Solution

The fourth proportional to 2,847.99, 3,930.49 and 1,729.23 is: 2,386.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.99 : 3,930.49 = 1,729.23 : x
  2. Step 2: Convert to fraction form
    2,847.99/3,930.49 = 1,729.23/x
  3. Step 3: Cross multiply
    2,847.99x = 3,930.49 × 1,729.23
  4. Step 4: Simplify right side
    2,847.99x = 6,796,721.22
  5. Step 5: Solve for x
    x = 6,796,721.22/2,847.99
  6. Step 6: Final answer
    x = 2,386.50

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1.5x scale

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.