Home / 7,438.42-11,158.04-1,891.79

Finding the Fourth Proportional to 7,438.42, 11,158.04 and 1,891.79

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Solution

The fourth proportional to 7,438.42, 11,158.04 and 1,891.79 is: 2,837.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.42 : 11,158.04 = 1,891.79 : x
  2. Step 2: Convert to fraction form
    7,438.42/11,158.04 = 1,891.79/x
  3. Step 3: Cross multiply
    7,438.42x = 11,158.04 × 1,891.79
  4. Step 4: Simplify right side
    7,438.42x = 21,108,668.49
  5. Step 5: Solve for x
    x = 21,108,668.49/7,438.42
  6. Step 6: Final answer
    x = 2,837.79

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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.