Home / 5,318.18-7,977.32-1,855.44

Finding the Fourth Proportional to 5,318.18, 7,977.32 and 1,855.44

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Solution

The fourth proportional to 5,318.18, 7,977.32 and 1,855.44 is: 2,783.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.18 : 7,977.32 = 1,855.44 : x
  2. Step 2: Convert to fraction form
    5,318.18/7,977.32 = 1,855.44/x
  3. Step 3: Cross multiply
    5,318.18x = 7,977.32 × 1,855.44
  4. Step 4: Simplify right side
    5,318.18x = 14,801,438.62
  5. Step 5: Solve for x
    x = 14,801,438.62/5,318.18
  6. Step 6: Final answer
    x = 2,783.18

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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.