Home / 7,072.29-9,759.56-4,089.06

Finding the Fourth Proportional to 7,072.29, 9,759.56 and 4,089.06

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Solution

The fourth proportional to 7,072.29, 9,759.56 and 4,089.06 is: 5,642.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.29 : 9,759.56 = 4,089.06 : x
  2. Step 2: Convert to fraction form
    7,072.29/9,759.56 = 4,089.06/x
  3. Step 3: Cross multiply
    7,072.29x = 9,759.56 × 4,089.06
  4. Step 4: Simplify right side
    7,072.29x = 39,907,405.97
  5. Step 5: Solve for x
    x = 39,907,405.97/7,072.29
  6. Step 6: Final answer
    x = 5,642.78

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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.