Home / 1,778.96-2,455.92-1,190.50

Finding the Fourth Proportional to 1,778.96, 2,455.92 and 1,190.50

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Solution

The fourth proportional to 1,778.96, 2,455.92 and 1,190.50 is: 1,643.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.96 : 2,455.92 = 1,190.50 : x
  2. Step 2: Convert to fraction form
    1,778.96/2,455.92 = 1,190.50/x
  3. Step 3: Cross multiply
    1,778.96x = 2,455.92 × 1,190.50
  4. Step 4: Simplify right side
    1,778.96x = 2,923,766.62
  5. Step 5: Solve for x
    x = 2,923,766.62/1,778.96
  6. Step 6: Final answer
    x = 1,643.52

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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.