Home / 3,057.40-4,219.09-1,730.80

Finding the Fourth Proportional to 3,057.40, 4,219.09 and 1,730.80

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Solution

The fourth proportional to 3,057.40, 4,219.09 and 1,730.80 is: 2,388.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.40 : 4,219.09 = 1,730.80 : x
  2. Step 2: Convert to fraction form
    3,057.40/4,219.09 = 1,730.80/x
  3. Step 3: Cross multiply
    3,057.40x = 4,219.09 × 1,730.80
  4. Step 4: Simplify right side
    3,057.40x = 7,302,400.97
  5. Step 5: Solve for x
    x = 7,302,400.97/3,057.40
  6. Step 6: Final answer
    x = 2,388.43

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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.