Home / 1,350.90-2,022.30-1,270.80

Finding the Fourth Proportional to 1,350.90, 2,022.30 and 1,270.80

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Solution

The fourth proportional to 1,350.90, 2,022.30 and 1,270.80 is: 1,902.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350.90 : 2,022.30 = 1,270.80 : x
  2. Step 2: Convert to fraction form
    1,350.90/2,022.30 = 1,270.80/x
  3. Step 3: Cross multiply
    1,350.90x = 2,022.30 × 1,270.80
  4. Step 4: Simplify right side
    1,350.90x = 2,569,938.84
  5. Step 5: Solve for x
    x = 2,569,938.84/1,350.90
  6. Step 6: Final answer
    x = 1,902.39

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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.