Home / 1,205.17-1,803.87-1,091.50

Finding the Fourth Proportional to 1,205.17, 1,803.87 and 1,091.50

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Solution

The fourth proportional to 1,205.17, 1,803.87 and 1,091.50 is: 1,633.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205.17 : 1,803.87 = 1,091.50 : x
  2. Step 2: Convert to fraction form
    1,205.17/1,803.87 = 1,091.50/x
  3. Step 3: Cross multiply
    1,205.17x = 1,803.87 × 1,091.50
  4. Step 4: Simplify right side
    1,205.17x = 1,968,919.60
  5. Step 5: Solve for x
    x = 1,968,919.60/1,205.17
  6. Step 6: Final answer
    x = 1,633.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.