Home / 7,725.85-10,661.66-4,189.03

Finding the Fourth Proportional to 7,725.85, 10,661.66 and 4,189.03

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Solution

The fourth proportional to 7,725.85, 10,661.66 and 4,189.03 is: 5,780.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,725.85 : 10,661.66 = 4,189.03 : x
  2. Step 2: Convert to fraction form
    7,725.85/10,661.66 = 4,189.03/x
  3. Step 3: Cross multiply
    7,725.85x = 10,661.66 × 4,189.03
  4. Step 4: Simplify right side
    7,725.85x = 44,662,013.59
  5. Step 5: Solve for x
    x = 44,662,013.59/7,725.85
  6. Step 6: Final answer
    x = 5,780.85

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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.