Home / 2,660.06-3,986.44-1,358.80

Finding the Fourth Proportional to 2,660.06, 3,986.44 and 1,358.80

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Solution

The fourth proportional to 2,660.06, 3,986.44 and 1,358.80 is: 2,036.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.06 : 3,986.44 = 1,358.80 : x
  2. Step 2: Convert to fraction form
    2,660.06/3,986.44 = 1,358.80/x
  3. Step 3: Cross multiply
    2,660.06x = 3,986.44 × 1,358.80
  4. Step 4: Simplify right side
    2,660.06x = 5,416,774.67
  5. Step 5: Solve for x
    x = 5,416,774.67/2,660.06
  6. Step 6: Final answer
    x = 2,036.34

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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.