Home / 4,189.65-5,781.81-2,511.21

Finding the Fourth Proportional to 4,189.65, 5,781.81 and 2,511.21

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Solution

The fourth proportional to 4,189.65, 5,781.81 and 2,511.21 is: 3,465.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.65 : 5,781.81 = 2,511.21 : x
  2. Step 2: Convert to fraction form
    4,189.65/5,781.81 = 2,511.21/x
  3. Step 3: Cross multiply
    4,189.65x = 5,781.81 × 2,511.21
  4. Step 4: Simplify right side
    4,189.65x = 14,519,339.09
  5. Step 5: Solve for x
    x = 14,519,339.09/4,189.65
  6. Step 6: Final answer
    x = 3,465.53

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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.