Home / 2,611.01-3,916.51-1,311.56

Finding the Fourth Proportional to 2,611.01, 3,916.51 and 1,311.56

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Solution

The fourth proportional to 2,611.01, 3,916.51 and 1,311.56 is: 1,967.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.01 : 3,916.51 = 1,311.56 : x
  2. Step 2: Convert to fraction form
    2,611.01/3,916.51 = 1,311.56/x
  3. Step 3: Cross multiply
    2,611.01x = 3,916.51 × 1,311.56
  4. Step 4: Simplify right side
    2,611.01x = 5,136,744.37
  5. Step 5: Solve for x
    x = 5,136,744.37/2,611.01
  6. Step 6: Final answer
    x = 1,967.34

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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.