Home / 4,787.51-7,181.81-2,189.75

Finding the Fourth Proportional to 4,787.51, 7,181.81 and 2,189.75

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Solution

The fourth proportional to 4,787.51, 7,181.81 and 2,189.75 is: 3,284.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.51 : 7,181.81 = 2,189.75 : x
  2. Step 2: Convert to fraction form
    4,787.51/7,181.81 = 2,189.75/x
  3. Step 3: Cross multiply
    4,787.51x = 7,181.81 × 2,189.75
  4. Step 4: Simplify right side
    4,787.51x = 15,726,357.50
  5. Step 5: Solve for x
    x = 15,726,357.50/4,787.51
  6. Step 6: Final answer
    x = 3,284.87

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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.