Home / 2,814.86-3,884.48-1,555.91

Finding the Fourth Proportional to 2,814.86, 3,884.48 and 1,555.91

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Solution

The fourth proportional to 2,814.86, 3,884.48 and 1,555.91 is: 2,147.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.86 : 3,884.48 = 1,555.91 : x
  2. Step 2: Convert to fraction form
    2,814.86/3,884.48 = 1,555.91/x
  3. Step 3: Cross multiply
    2,814.86x = 3,884.48 × 1,555.91
  4. Step 4: Simplify right side
    2,814.86x = 6,043,874.07
  5. Step 5: Solve for x
    x = 6,043,874.07/2,814.86
  6. Step 6: Final answer
    x = 2,147.14

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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.