Home / 1,340.86-1,852.26-1,270.80

Finding the Fourth Proportional to 1,340.86, 1,852.26 and 1,270.80

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Solution

The fourth proportional to 1,340.86, 1,852.26 and 1,270.80 is: 1,755.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.86 : 1,852.26 = 1,270.80 : x
  2. Step 2: Convert to fraction form
    1,340.86/1,852.26 = 1,270.80/x
  3. Step 3: Cross multiply
    1,340.86x = 1,852.26 × 1,270.80
  4. Step 4: Simplify right side
    1,340.86x = 2,353,852.01
  5. Step 5: Solve for x
    x = 2,353,852.01/1,340.86
  6. Step 6: Final answer
    x = 1,755.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.