Home / 1,918.26-2,647.08-1,172.62

Finding the Fourth Proportional to 1,918.26, 2,647.08 and 1,172.62

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Solution

The fourth proportional to 1,918.26, 2,647.08 and 1,172.62 is: 1,618.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.26 : 2,647.08 = 1,172.62 : x
  2. Step 2: Convert to fraction form
    1,918.26/2,647.08 = 1,172.62/x
  3. Step 3: Cross multiply
    1,918.26x = 2,647.08 × 1,172.62
  4. Step 4: Simplify right side
    1,918.26x = 3,104,018.95
  5. Step 5: Solve for x
    x = 3,104,018.95/1,918.26
  6. Step 6: Final answer
    x = 1,618.14

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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.