Home / 2,780.92-3,836.83-1,787.35

Finding the Fourth Proportional to 2,780.92, 3,836.83 and 1,787.35

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Solution

The fourth proportional to 2,780.92, 3,836.83 and 1,787.35 is: 2,466.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.92 : 3,836.83 = 1,787.35 : x
  2. Step 2: Convert to fraction form
    2,780.92/3,836.83 = 1,787.35/x
  3. Step 3: Cross multiply
    2,780.92x = 3,836.83 × 1,787.35
  4. Step 4: Simplify right side
    2,780.92x = 6,857,758.10
  5. Step 5: Solve for x
    x = 6,857,758.10/2,780.92
  6. Step 6: Final answer
    x = 2,466.00

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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.