Home / 1,816.43-2,506.68-1,019.78

Finding the Fourth Proportional to 1,816.43, 2,506.68 and 1,019.78

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Solution

The fourth proportional to 1,816.43, 2,506.68 and 1,019.78 is: 1,407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.43 : 2,506.68 = 1,019.78 : x
  2. Step 2: Convert to fraction form
    1,816.43/2,506.68 = 1,019.78/x
  3. Step 3: Cross multiply
    1,816.43x = 2,506.68 × 1,019.78
  4. Step 4: Simplify right side
    1,816.43x = 2,556,249.60
  5. Step 5: Solve for x
    x = 2,556,249.60/1,816.43
  6. Step 6: Final answer
    x = 1,407.30

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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.