Home / 7,122.36-10,685.10-2,741.88

Finding the Fourth Proportional to 7,122.36, 10,685.10 and 2,741.88

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Solution

The fourth proportional to 7,122.36, 10,685.10 and 2,741.88 is: 4,113.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.36 : 10,685.10 = 2,741.88 : x
  2. Step 2: Convert to fraction form
    7,122.36/10,685.10 = 2,741.88/x
  3. Step 3: Cross multiply
    7,122.36x = 10,685.10 × 2,741.88
  4. Step 4: Simplify right side
    7,122.36x = 29,297,261.99
  5. Step 5: Solve for x
    x = 29,297,261.99/7,122.36
  6. Step 6: Final answer
    x = 4,113.42

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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.