Home / 7,072.36-9,761.62-4,089.92

Finding the Fourth Proportional to 7,072.36, 9,761.62 and 4,089.92

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Solution

The fourth proportional to 7,072.36, 9,761.62 and 4,089.92 is: 5,645.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.36 : 9,761.62 = 4,089.92 : x
  2. Step 2: Convert to fraction form
    7,072.36/9,761.62 = 4,089.92/x
  3. Step 3: Cross multiply
    7,072.36x = 9,761.62 × 4,089.92
  4. Step 4: Simplify right side
    7,072.36x = 39,924,244.87
  5. Step 5: Solve for x
    x = 39,924,244.87/7,072.36
  6. Step 6: Final answer
    x = 5,645.11

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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.