Home / 3,180.09-4,388.49-1,782.84

Finding the Fourth Proportional to 3,180.09, 4,388.49 and 1,782.84

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Solution

The fourth proportional to 3,180.09, 4,388.49 and 1,782.84 is: 2,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.09 : 4,388.49 = 1,782.84 : x
  2. Step 2: Convert to fraction form
    3,180.09/4,388.49 = 1,782.84/x
  3. Step 3: Cross multiply
    3,180.09x = 4,388.49 × 1,782.84
  4. Step 4: Simplify right side
    3,180.09x = 7,823,975.51
  5. Step 5: Solve for x
    x = 7,823,975.51/3,180.09
  6. Step 6: Final answer
    x = 2,460.30

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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.