Home / 7,438.12-11,153.90-2,817.88

Finding the Fourth Proportional to 7,438.12, 11,153.90 and 2,817.88

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Solution

The fourth proportional to 7,438.12, 11,153.90 and 2,817.88 is: 4,225.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.12 : 11,153.90 = 2,817.88 : x
  2. Step 2: Convert to fraction form
    7,438.12/11,153.90 = 2,817.88/x
  3. Step 3: Cross multiply
    7,438.12x = 11,153.90 × 2,817.88
  4. Step 4: Simplify right side
    7,438.12x = 31,430,351.73
  5. Step 5: Solve for x
    x = 31,430,351.73/7,438.12
  6. Step 6: Final answer
    x = 4,225.58

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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.