Home / 1,778.22-2,453.09-1,188.95

Finding the Fourth Proportional to 1,778.22, 2,453.09 and 1,188.95

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Solution

The fourth proportional to 1,778.22, 2,453.09 and 1,188.95 is: 1,640.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.22 : 2,453.09 = 1,188.95 : x
  2. Step 2: Convert to fraction form
    1,778.22/2,453.09 = 1,188.95/x
  3. Step 3: Cross multiply
    1,778.22x = 2,453.09 × 1,188.95
  4. Step 4: Simplify right side
    1,778.22x = 2,916,583.15
  5. Step 5: Solve for x
    x = 2,916,583.15/1,778.22
  6. Step 6: Final answer
    x = 1,640.17

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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.