Home / 7,072.42-9,759.49-4,087.77

Finding the Fourth Proportional to 7,072.42, 9,759.49 and 4,087.77

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Solution

The fourth proportional to 7,072.42, 9,759.49 and 4,087.77 is: 5,640.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.42 : 9,759.49 = 4,087.77 : x
  2. Step 2: Convert to fraction form
    7,072.42/9,759.49 = 4,087.77/x
  3. Step 3: Cross multiply
    7,072.42x = 9,759.49 × 4,087.77
  4. Step 4: Simplify right side
    7,072.42x = 39,894,550.44
  5. Step 5: Solve for x
    x = 39,894,550.44/7,072.42
  6. Step 6: Final answer
    x = 5,640.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.