Home / 7,222.11-9,966.49-3,992.26

Finding the Fourth Proportional to 7,222.11, 9,966.49 and 3,992.26

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Solution

The fourth proportional to 7,222.11, 9,966.49 and 3,992.26 is: 5,509.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.11 : 9,966.49 = 3,992.26 : x
  2. Step 2: Convert to fraction form
    7,222.11/9,966.49 = 3,992.26/x
  3. Step 3: Cross multiply
    7,222.11x = 9,966.49 × 3,992.26
  4. Step 4: Simplify right side
    7,222.11x = 39,788,853.64
  5. Step 5: Solve for x
    x = 39,788,853.64/7,222.11
  6. Step 6: Final answer
    x = 5,509.31

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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.