Home / 1,918.18-2,647.24-1,079.09

Finding the Fourth Proportional to 1,918.18, 2,647.24 and 1,079.09

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Solution

The fourth proportional to 1,918.18, 2,647.24 and 1,079.09 is: 1,489.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.18 : 2,647.24 = 1,079.09 : x
  2. Step 2: Convert to fraction form
    1,918.18/2,647.24 = 1,079.09/x
  3. Step 3: Cross multiply
    1,918.18x = 2,647.24 × 1,079.09
  4. Step 4: Simplify right side
    1,918.18x = 2,856,610.21
  5. Step 5: Solve for x
    x = 2,856,610.21/1,918.18
  6. Step 6: Final answer
    x = 1,489.23

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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.