Home / 7,169.72-9,891.87-4,185.14

Finding the Fourth Proportional to 7,169.72, 9,891.87 and 4,185.14

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Solution

The fourth proportional to 7,169.72, 9,891.87 and 4,185.14 is: 5,774.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,169.72 : 9,891.87 = 4,185.14 : x
  2. Step 2: Convert to fraction form
    7,169.72/9,891.87 = 4,185.14/x
  3. Step 3: Cross multiply
    7,169.72x = 9,891.87 × 4,185.14
  4. Step 4: Simplify right side
    7,169.72x = 41,398,860.81
  5. Step 5: Solve for x
    x = 41,398,860.81/7,169.72
  6. Step 6: Final answer
    x = 5,774.13

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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.