Home / 1,945.85-2,685.54-1,237.77

Finding the Fourth Proportional to 1,945.85, 2,685.54 and 1,237.77

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Solution

The fourth proportional to 1,945.85, 2,685.54 and 1,237.77 is: 1,708.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.85 : 2,685.54 = 1,237.77 : x
  2. Step 2: Convert to fraction form
    1,945.85/2,685.54 = 1,237.77/x
  3. Step 3: Cross multiply
    1,945.85x = 2,685.54 × 1,237.77
  4. Step 4: Simplify right side
    1,945.85x = 3,324,061.23
  5. Step 5: Solve for x
    x = 3,324,061.23/1,945.85
  6. Step 6: Final answer
    x = 1,708.28

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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.