Home / 4,145.09-5,717.12-2,886.21

Finding the Fourth Proportional to 4,145.09, 5,717.12 and 2,886.21

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Solution

The fourth proportional to 4,145.09, 5,717.12 and 2,886.21 is: 3,980.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,145.09 : 5,717.12 = 2,886.21 : x
  2. Step 2: Convert to fraction form
    4,145.09/5,717.12 = 2,886.21/x
  3. Step 3: Cross multiply
    4,145.09x = 5,717.12 × 2,886.21
  4. Step 4: Simplify right side
    4,145.09x = 16,500,794.48
  5. Step 5: Solve for x
    x = 16,500,794.48/4,145.09
  6. Step 6: Final answer
    x = 3,980.81

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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.