Home / 3,980.07-5,968.05-1,786.92

Finding the Fourth Proportional to 3,980.07, 5,968.05 and 1,786.92

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Solution

The fourth proportional to 3,980.07, 5,968.05 and 1,786.92 is: 2,679.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.07 : 5,968.05 = 1,786.92 : x
  2. Step 2: Convert to fraction form
    3,980.07/5,968.05 = 1,786.92/x
  3. Step 3: Cross multiply
    3,980.07x = 5,968.05 × 1,786.92
  4. Step 4: Simplify right side
    3,980.07x = 10,664,427.91
  5. Step 5: Solve for x
    x = 10,664,427.91/3,980.07
  6. Step 6: Final answer
    x = 2,679.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.