Home / 2,787.26-3,846.40-1,608.30

Finding the Fourth Proportional to 2,787.26, 3,846.40 and 1,608.30

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Solution

The fourth proportional to 2,787.26, 3,846.40 and 1,608.30 is: 2,219.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.26 : 3,846.40 = 1,608.30 : x
  2. Step 2: Convert to fraction form
    2,787.26/3,846.40 = 1,608.30/x
  3. Step 3: Cross multiply
    2,787.26x = 3,846.40 × 1,608.30
  4. Step 4: Simplify right side
    2,787.26x = 6,186,165.12
  5. Step 5: Solve for x
    x = 6,186,165.12/2,787.26
  6. Step 6: Final answer
    x = 2,219.44

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1.5x scale

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.