Home / 2,814.50-3,884-1,555.64

Finding the Fourth Proportional to 2,814.50, 3,884 and 1,555.64

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Solution

The fourth proportional to 2,814.50, 3,884 and 1,555.64 is: 2,146.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.50 : 3,884 = 1,555.64 : x
  2. Step 2: Convert to fraction form
    2,814.50/3,884 = 1,555.64/x
  3. Step 3: Cross multiply
    2,814.50x = 3,884 × 1,555.64
  4. Step 4: Simplify right side
    2,814.50x = 6,042,105.76
  5. Step 5: Solve for x
    x = 6,042,105.76/2,814.50
  6. Step 6: Final answer
    x = 2,146.78

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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.