Home / 2,855.27-4,276.71-2,785.58

Finding the Fourth Proportional to 2,855.27, 4,276.71 and 2,785.58

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Solution

The fourth proportional to 2,855.27, 4,276.71 and 2,785.58 is: 4,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.27 : 4,276.71 = 2,785.58 : x
  2. Step 2: Convert to fraction form
    2,855.27/4,276.71 = 2,785.58/x
  3. Step 3: Cross multiply
    2,855.27x = 4,276.71 × 2,785.58
  4. Step 4: Simplify right side
    2,855.27x = 11,913,117.84
  5. Step 5: Solve for x
    x = 11,913,117.84/2,855.27
  6. Step 6: Final answer
    x = 4,172.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.