Home / 1,918.74-2,873.53-1,186.09

Finding the Fourth Proportional to 1,918.74, 2,873.53 and 1,186.09

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Solution

The fourth proportional to 1,918.74, 2,873.53 and 1,186.09 is: 1,776.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.74 : 2,873.53 = 1,186.09 : x
  2. Step 2: Convert to fraction form
    1,918.74/2,873.53 = 1,186.09/x
  3. Step 3: Cross multiply
    1,918.74x = 2,873.53 × 1,186.09
  4. Step 4: Simplify right side
    1,918.74x = 3,408,265.20
  5. Step 5: Solve for x
    x = 3,408,265.20/1,918.74
  6. Step 6: Final answer
    x = 1,776.30

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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.