Home / 3,405.72-5,112.89-2,895.96

Finding the Fourth Proportional to 3,405.72, 5,112.89 and 2,895.96

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Solution

The fourth proportional to 3,405.72, 5,112.89 and 2,895.96 is: 4,347.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.72 : 5,112.89 = 2,895.96 : x
  2. Step 2: Convert to fraction form
    3,405.72/5,112.89 = 2,895.96/x
  3. Step 3: Cross multiply
    3,405.72x = 5,112.89 × 2,895.96
  4. Step 4: Simplify right side
    3,405.72x = 14,806,724.92
  5. Step 5: Solve for x
    x = 14,806,724.92/3,405.72
  6. Step 6: Final answer
    x = 4,347.60

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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.