Home / 2,772.09-3,826.71-1,828.40

Finding the Fourth Proportional to 2,772.09, 3,826.71 and 1,828.40

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Solution

The fourth proportional to 2,772.09, 3,826.71 and 1,828.40 is: 2,523.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.09 : 3,826.71 = 1,828.40 : x
  2. Step 2: Convert to fraction form
    2,772.09/3,826.71 = 1,828.40/x
  3. Step 3: Cross multiply
    2,772.09x = 3,826.71 × 1,828.40
  4. Step 4: Simplify right side
    2,772.09x = 6,996,737.43
  5. Step 5: Solve for x
    x = 6,996,737.43/2,772.09
  6. Step 6: Final answer
    x = 2,523.99

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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.