Home / 1,678.16-2,514.76-936.76

Finding the Fourth Proportional to 1,678.16, 2,514.76 and 936.76

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Solution

The fourth proportional to 1,678.16, 2,514.76 and 936.76 is: 1,403.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.16 : 2,514.76 = 936.76 : x
  2. Step 2: Convert to fraction form
    1,678.16/2,514.76 = 936.76/x
  3. Step 3: Cross multiply
    1,678.16x = 2,514.76 × 936.76
  4. Step 4: Simplify right side
    1,678.16x = 2,355,717.95
  5. Step 5: Solve for x
    x = 2,355,717.95/1,678.16
  6. Step 6: Final answer
    x = 1,403.75

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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.