Home / 4,091.36-6,136.32-1,318.72

Finding the Fourth Proportional to 4,091.36, 6,136.32 and 1,318.72

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Solution

The fourth proportional to 4,091.36, 6,136.32 and 1,318.72 is: 1,977.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,091.36 : 6,136.32 = 1,318.72 : x
  2. Step 2: Convert to fraction form
    4,091.36/6,136.32 = 1,318.72/x
  3. Step 3: Cross multiply
    4,091.36x = 6,136.32 × 1,318.72
  4. Step 4: Simplify right side
    4,091.36x = 8,092,087.91
  5. Step 5: Solve for x
    x = 8,092,087.91/4,091.36
  6. Step 6: Final answer
    x = 1,977.85

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1.5x scale

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.