Home / 3,048.30-4,206.42-1,721.70

Finding the Fourth Proportional to 3,048.30, 4,206.42 and 1,721.70

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Solution

The fourth proportional to 3,048.30, 4,206.42 and 1,721.70 is: 2,375.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,048.30 : 4,206.42 = 1,721.70 : x
  2. Step 2: Convert to fraction form
    3,048.30/4,206.42 = 1,721.70/x
  3. Step 3: Cross multiply
    3,048.30x = 4,206.42 × 1,721.70
  4. Step 4: Simplify right side
    3,048.30x = 7,242,193.31
  5. Step 5: Solve for x
    x = 7,242,193.31/3,048.30
  6. Step 6: Final answer
    x = 2,375.81

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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.