Home / 7,021.46-9,687.94-4,189.91

Finding the Fourth Proportional to 7,021.46, 9,687.94 and 4,189.91

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Solution

The fourth proportional to 7,021.46, 9,687.94 and 4,189.91 is: 5,781.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.46 : 9,687.94 = 4,189.91 : x
  2. Step 2: Convert to fraction form
    7,021.46/9,687.94 = 4,189.91/x
  3. Step 3: Cross multiply
    7,021.46x = 9,687.94 × 4,189.91
  4. Step 4: Simplify right side
    7,021.46x = 40,591,537.77
  5. Step 5: Solve for x
    x = 40,591,537.77/7,021.46
  6. Step 6: Final answer
    x = 5,781.07

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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.