Home / 7,021.82-9,689.85-3,877.94

Finding the Fourth Proportional to 7,021.82, 9,689.85 and 3,877.94

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Solution

The fourth proportional to 7,021.82, 9,689.85 and 3,877.94 is: 5,351.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.82 : 9,689.85 = 3,877.94 : x
  2. Step 2: Convert to fraction form
    7,021.82/9,689.85 = 3,877.94/x
  3. Step 3: Cross multiply
    7,021.82x = 9,689.85 × 3,877.94
  4. Step 4: Simplify right side
    7,021.82x = 37,576,656.91
  5. Step 5: Solve for x
    x = 37,576,656.91/7,021.82
  6. Step 6: Final answer
    x = 5,351.41

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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.