Home / 1,678.35-2,514.75-582.12

Finding the Fourth Proportional to 1,678.35, 2,514.75 and 582.12

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Solution

The fourth proportional to 1,678.35, 2,514.75 and 582.12 is: 872.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.35 : 2,514.75 = 582.12 : x
  2. Step 2: Convert to fraction form
    1,678.35/2,514.75 = 582.12/x
  3. Step 3: Cross multiply
    1,678.35x = 2,514.75 × 582.12
  4. Step 4: Simplify right side
    1,678.35x = 1,463,884.09
  5. Step 5: Solve for x
    x = 1,463,884.09/1,678.35
  6. Step 6: Final answer
    x = 872.21

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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.