Home / 7,072.38-9,758.79-4,087.64

Finding the Fourth Proportional to 7,072.38, 9,758.79 and 4,087.64

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Solution

The fourth proportional to 7,072.38, 9,758.79 and 4,087.64 is: 5,640.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.38 : 9,758.79 = 4,087.64 : x
  2. Step 2: Convert to fraction form
    7,072.38/9,758.79 = 4,087.64/x
  3. Step 3: Cross multiply
    7,072.38x = 9,758.79 × 4,087.64
  4. Step 4: Simplify right side
    7,072.38x = 39,890,444.75
  5. Step 5: Solve for x
    x = 39,890,444.75/7,072.38
  6. Step 6: Final answer
    x = 5,640.31

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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.