Home / 1,911.45-2,867.64-612.93

Finding the Fourth Proportional to 1,911.45, 2,867.64 and 612.93

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Solution

The fourth proportional to 1,911.45, 2,867.64 and 612.93 is: 919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.45 : 2,867.64 = 612.93 : x
  2. Step 2: Convert to fraction form
    1,911.45/2,867.64 = 612.93/x
  3. Step 3: Cross multiply
    1,911.45x = 2,867.64 × 612.93
  4. Step 4: Simplify right side
    1,911.45x = 1,757,662.59
  5. Step 5: Solve for x
    x = 1,757,662.59/1,911.45
  6. Step 6: Final answer
    x = 919.54

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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.