Home / 1,480.40-2,215.20-1,350.80

Finding the Fourth Proportional to 1,480.40, 2,215.20 and 1,350.80

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Solution

The fourth proportional to 1,480.40, 2,215.20 and 1,350.80 is: 2,021.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.40 : 2,215.20 = 1,350.80 : x
  2. Step 2: Convert to fraction form
    1,480.40/2,215.20 = 1,350.80/x
  3. Step 3: Cross multiply
    1,480.40x = 2,215.20 × 1,350.80
  4. Step 4: Simplify right side
    1,480.40x = 2,992,292.16
  5. Step 5: Solve for x
    x = 2,992,292.16/1,480.40
  6. Step 6: Final answer
    x = 2,021.27

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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.