Home / 5,429.69-8,144.62-2,142.75

Finding the Fourth Proportional to 5,429.69, 8,144.62 and 2,142.75

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Solution

The fourth proportional to 5,429.69, 8,144.62 and 2,142.75 is: 3,214.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.69 : 8,144.62 = 2,142.75 : x
  2. Step 2: Convert to fraction form
    5,429.69/8,144.62 = 2,142.75/x
  3. Step 3: Cross multiply
    5,429.69x = 8,144.62 × 2,142.75
  4. Step 4: Simplify right side
    5,429.69x = 17,451,884.51
  5. Step 5: Solve for x
    x = 17,451,884.51/5,429.69
  6. Step 6: Final answer
    x = 3,214.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.