Home / 2,886.36-3,981.52-2,000.64

Finding the Fourth Proportional to 2,886.36, 3,981.52 and 2,000.64

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Solution

The fourth proportional to 2,886.36, 3,981.52 and 2,000.64 is: 2,759.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.36 : 3,981.52 = 2,000.64 : x
  2. Step 2: Convert to fraction form
    2,886.36/3,981.52 = 2,000.64/x
  3. Step 3: Cross multiply
    2,886.36x = 3,981.52 × 2,000.64
  4. Step 4: Simplify right side
    2,886.36x = 7,965,588.17
  5. Step 5: Solve for x
    x = 7,965,588.17/2,886.36
  6. Step 6: Final answer
    x = 2,759.73

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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.