Home / 2,905.15-4,009.17-1,578.94

Finding the Fourth Proportional to 2,905.15, 4,009.17 and 1,578.94

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Solution

The fourth proportional to 2,905.15, 4,009.17 and 1,578.94 is: 2,178.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.15 : 4,009.17 = 1,578.94 : x
  2. Step 2: Convert to fraction form
    2,905.15/4,009.17 = 1,578.94/x
  3. Step 3: Cross multiply
    2,905.15x = 4,009.17 × 1,578.94
  4. Step 4: Simplify right side
    2,905.15x = 6,330,238.88
  5. Step 5: Solve for x
    x = 6,330,238.88/2,905.15
  6. Step 6: Final answer
    x = 2,178.97

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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.