Home / 5,190.06-7,787.10-1,905.42

Finding the Fourth Proportional to 5,190.06, 7,787.10 and 1,905.42

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Solution

The fourth proportional to 5,190.06, 7,787.10 and 1,905.42 is: 2,858.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.06 : 7,787.10 = 1,905.42 : x
  2. Step 2: Convert to fraction form
    5,190.06/7,787.10 = 1,905.42/x
  3. Step 3: Cross multiply
    5,190.06x = 7,787.10 × 1,905.42
  4. Step 4: Simplify right side
    5,190.06x = 14,837,696.08
  5. Step 5: Solve for x
    x = 14,837,696.08/5,190.06
  6. Step 6: Final answer
    x = 2,858.87

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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.