Home / 3,047.43-4,205.69-1,721.28

Finding the Fourth Proportional to 3,047.43, 4,205.69 and 1,721.28

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Solution

The fourth proportional to 3,047.43, 4,205.69 and 1,721.28 is: 2,375.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,047.43 : 4,205.69 = 1,721.28 : x
  2. Step 2: Convert to fraction form
    3,047.43/4,205.69 = 1,721.28/x
  3. Step 3: Cross multiply
    3,047.43x = 4,205.69 × 1,721.28
  4. Step 4: Simplify right side
    3,047.43x = 7,239,170.08
  5. Step 5: Solve for x
    x = 7,239,170.08/3,047.43
  6. Step 6: Final answer
    x = 2,375.50

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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.