Home / 2,905.69-4,009.85-1,579.39

Finding the Fourth Proportional to 2,905.69, 4,009.85 and 1,579.39

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Solution

The fourth proportional to 2,905.69, 4,009.85 and 1,579.39 is: 2,179.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.69 : 4,009.85 = 1,579.39 : x
  2. Step 2: Convert to fraction form
    2,905.69/4,009.85 = 1,579.39/x
  3. Step 3: Cross multiply
    2,905.69x = 4,009.85 × 1,579.39
  4. Step 4: Simplify right side
    2,905.69x = 6,333,116.99
  5. Step 5: Solve for x
    x = 6,333,116.99/2,905.69
  6. Step 6: Final answer
    x = 2,179.56

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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.