Home / 2,911.41-4,015.69-2,814.98

Finding the Fourth Proportional to 2,911.41, 4,015.69 and 2,814.98

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Solution

The fourth proportional to 2,911.41, 4,015.69 and 2,814.98 is: 3,882.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.41 : 4,015.69 = 2,814.98 : x
  2. Step 2: Convert to fraction form
    2,911.41/4,015.69 = 2,814.98/x
  3. Step 3: Cross multiply
    2,911.41x = 4,015.69 × 2,814.98
  4. Step 4: Simplify right side
    2,911.41x = 11,304,059.92
  5. Step 5: Solve for x
    x = 11,304,059.92/2,911.41
  6. Step 6: Final answer
    x = 3,882.68

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1.5x scale

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.