Home / 7,072.30-9,758.68-4,087.55

Finding the Fourth Proportional to 7,072.30, 9,758.68 and 4,087.55

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Solution

The fourth proportional to 7,072.30, 9,758.68 and 4,087.55 is: 5,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.30 : 9,758.68 = 4,087.55 : x
  2. Step 2: Convert to fraction form
    7,072.30/9,758.68 = 4,087.55/x
  3. Step 3: Cross multiply
    7,072.30x = 9,758.68 × 4,087.55
  4. Step 4: Simplify right side
    7,072.30x = 39,889,141.80
  5. Step 5: Solve for x
    x = 39,889,141.80/7,072.30
  6. Step 6: Final answer
    x = 5,640.20

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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.