Home / 2,916.81-4,045.82-2,811.73

Finding the Fourth Proportional to 2,916.81, 4,045.82 and 2,811.73

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Solution

The fourth proportional to 2,916.81, 4,045.82 and 2,811.73 is: 3,900.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.81 : 4,045.82 = 2,811.73 : x
  2. Step 2: Convert to fraction form
    2,916.81/4,045.82 = 2,811.73/x
  3. Step 3: Cross multiply
    2,916.81x = 4,045.82 × 2,811.73
  4. Step 4: Simplify right side
    2,916.81x = 11,375,736.88
  5. Step 5: Solve for x
    x = 11,375,736.88/2,916.81
  6. Step 6: Final answer
    x = 3,900.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.