Home / 1,270.70-1,900.78-1,192.94

Finding the Fourth Proportional to 1,270.70, 1,900.78 and 1,192.94

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Solution

The fourth proportional to 1,270.70, 1,900.78 and 1,192.94 is: 1,784.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.70 : 1,900.78 = 1,192.94 : x
  2. Step 2: Convert to fraction form
    1,270.70/1,900.78 = 1,192.94/x
  3. Step 3: Cross multiply
    1,270.70x = 1,900.78 × 1,192.94
  4. Step 4: Simplify right side
    1,270.70x = 2,267,516.49
  5. Step 5: Solve for x
    x = 2,267,516.49/1,270.70
  6. Step 6: Final answer
    x = 1,784.46

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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.