Home / 7,072.30-9,760.26-3,928.42

Finding the Fourth Proportional to 7,072.30, 9,760.26 and 3,928.42

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Solution

The fourth proportional to 7,072.30, 9,760.26 and 3,928.42 is: 5,421.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.30 : 9,760.26 = 3,928.42 : x
  2. Step 2: Convert to fraction form
    7,072.30/9,760.26 = 3,928.42/x
  3. Step 3: Cross multiply
    7,072.30x = 9,760.26 × 3,928.42
  4. Step 4: Simplify right side
    7,072.30x = 38,342,400.59
  5. Step 5: Solve for x
    x = 38,342,400.59/7,072.30
  6. Step 6: Final answer
    x = 5,421.49

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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.