Home / 3,177.75-4,385.57-1,780.77

Finding the Fourth Proportional to 3,177.75, 4,385.57 and 1,780.77

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Solution

The fourth proportional to 3,177.75, 4,385.57 and 1,780.77 is: 2,457.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.75 : 4,385.57 = 1,780.77 : x
  2. Step 2: Convert to fraction form
    3,177.75/4,385.57 = 1,780.77/x
  3. Step 3: Cross multiply
    3,177.75x = 4,385.57 × 1,780.77
  4. Step 4: Simplify right side
    3,177.75x = 7,809,682.59
  5. Step 5: Solve for x
    x = 7,809,682.59/3,177.75
  6. Step 6: Final answer
    x = 2,457.61

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1.5x scale

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.