Home / 2,678.62-4,018.19-923.39

Finding the Fourth Proportional to 2,678.62, 4,018.19 and 923.39

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Solution

The fourth proportional to 2,678.62, 4,018.19 and 923.39 is: 1,385.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.62 : 4,018.19 = 923.39 : x
  2. Step 2: Convert to fraction form
    2,678.62/4,018.19 = 923.39/x
  3. Step 3: Cross multiply
    2,678.62x = 4,018.19 × 923.39
  4. Step 4: Simplify right side
    2,678.62x = 3,710,350.26
  5. Step 5: Solve for x
    x = 3,710,350.26/2,678.62
  6. Step 6: Final answer
    x = 1,385.17

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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.