Home / 2,985.36-4,138.74-2,827.38

Finding the Fourth Proportional to 2,985.36, 4,138.74 and 2,827.38

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Solution

The fourth proportional to 2,985.36, 4,138.74 and 2,827.38 is: 3,919.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.36 : 4,138.74 = 2,827.38 : x
  2. Step 2: Convert to fraction form
    2,985.36/4,138.74 = 2,827.38/x
  3. Step 3: Cross multiply
    2,985.36x = 4,138.74 × 2,827.38
  4. Step 4: Simplify right side
    2,985.36x = 11,701,790.70
  5. Step 5: Solve for x
    x = 11,701,790.70/2,985.36
  6. Step 6: Final answer
    x = 3,919.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.