Home / 5,185.26-7,155.68-2,827.40

Finding the Fourth Proportional to 5,185.26, 7,155.68 and 2,827.40

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Solution

The fourth proportional to 5,185.26, 7,155.68 and 2,827.40 is: 3,901.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.26 : 7,155.68 = 2,827.40 : x
  2. Step 2: Convert to fraction form
    5,185.26/7,155.68 = 2,827.40/x
  3. Step 3: Cross multiply
    5,185.26x = 7,155.68 × 2,827.40
  4. Step 4: Simplify right side
    5,185.26x = 20,231,919.72
  5. Step 5: Solve for x
    x = 20,231,919.72/5,185.26
  6. Step 6: Final answer
    x = 3,901.81

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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.