Home / 3,177.75-4,385.36-1,780.83

Finding the Fourth Proportional to 3,177.75, 4,385.36 and 1,780.83

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Solution

The fourth proportional to 3,177.75, 4,385.36 and 1,780.83 is: 2,457.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.75 : 4,385.36 = 1,780.83 : x
  2. Step 2: Convert to fraction form
    3,177.75/4,385.36 = 1,780.83/x
  3. Step 3: Cross multiply
    3,177.75x = 4,385.36 × 1,780.83
  4. Step 4: Simplify right side
    3,177.75x = 7,809,571.74
  5. Step 5: Solve for x
    x = 7,809,571.74/3,177.75
  6. Step 6: Final answer
    x = 2,457.58

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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.