Home / 2,787.14-3,846.19-1,528.20

Finding the Fourth Proportional to 2,787.14, 3,846.19 and 1,528.20

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Solution

The fourth proportional to 2,787.14, 3,846.19 and 1,528.20 is: 2,108.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.14 : 3,846.19 = 1,528.20 : x
  2. Step 2: Convert to fraction form
    2,787.14/3,846.19 = 1,528.20/x
  3. Step 3: Cross multiply
    2,787.14x = 3,846.19 × 1,528.20
  4. Step 4: Simplify right side
    2,787.14x = 5,877,747.56
  5. Step 5: Solve for x
    x = 5,877,747.56/2,787.14
  6. Step 6: Final answer
    x = 2,108.88

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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.