Home / 1,270.12-1,893.77-1,161.64

Finding the Fourth Proportional to 1,270.12, 1,893.77 and 1,161.64

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Solution

The fourth proportional to 1,270.12, 1,893.77 and 1,161.64 is: 1,732.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.12 : 1,893.77 = 1,161.64 : x
  2. Step 2: Convert to fraction form
    1,270.12/1,893.77 = 1,161.64/x
  3. Step 3: Cross multiply
    1,270.12x = 1,893.77 × 1,161.64
  4. Step 4: Simplify right side
    1,270.12x = 2,199,878.98
  5. Step 5: Solve for x
    x = 2,199,878.98/1,270.12
  6. Step 6: Final answer
    x = 1,732.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.