Home / 4,240.72-6,361.98-1,318.96

Finding the Fourth Proportional to 4,240.72, 6,361.98 and 1,318.96

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Solution

The fourth proportional to 4,240.72, 6,361.98 and 1,318.96 is: 1,978.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,240.72 : 6,361.98 = 1,318.96 : x
  2. Step 2: Convert to fraction form
    4,240.72/6,361.98 = 1,318.96/x
  3. Step 3: Cross multiply
    4,240.72x = 6,361.98 × 1,318.96
  4. Step 4: Simplify right side
    4,240.72x = 8,391,197.14
  5. Step 5: Solve for x
    x = 8,391,197.14/4,240.72
  6. Step 6: Final answer
    x = 1,978.72

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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.