Home / 2,678.49-4,015.01-1,119.35

Finding the Fourth Proportional to 2,678.49, 4,015.01 and 1,119.35

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Solution

The fourth proportional to 2,678.49, 4,015.01 and 1,119.35 is: 1,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.49 : 4,015.01 = 1,119.35 : x
  2. Step 2: Convert to fraction form
    2,678.49/4,015.01 = 1,119.35/x
  3. Step 3: Cross multiply
    2,678.49x = 4,015.01 × 1,119.35
  4. Step 4: Simplify right side
    2,678.49x = 4,494,214.28
  5. Step 5: Solve for x
    x = 4,494,214.28/2,678.49
  6. Step 6: Final answer
    x = 1,677.89

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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.