Home / 2,787.46-3,846.06-1,891.32

Finding the Fourth Proportional to 2,787.46, 3,846.06 and 1,891.32

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Solution

The fourth proportional to 2,787.46, 3,846.06 and 1,891.32 is: 2,609.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.46 : 3,846.06 = 1,891.32 : x
  2. Step 2: Convert to fraction form
    2,787.46/3,846.06 = 1,891.32/x
  3. Step 3: Cross multiply
    2,787.46x = 3,846.06 × 1,891.32
  4. Step 4: Simplify right side
    2,787.46x = 7,274,130.20
  5. Step 5: Solve for x
    x = 7,274,130.20/2,787.46
  6. Step 6: Final answer
    x = 2,609.59

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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.