Home / 3,925.15-5,416.64-2,156.71

Finding the Fourth Proportional to 3,925.15, 5,416.64 and 2,156.71

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Solution

The fourth proportional to 3,925.15, 5,416.64 and 2,156.71 is: 2,976.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.15 : 5,416.64 = 2,156.71 : x
  2. Step 2: Convert to fraction form
    3,925.15/5,416.64 = 2,156.71/x
  3. Step 3: Cross multiply
    3,925.15x = 5,416.64 × 2,156.71
  4. Step 4: Simplify right side
    3,925.15x = 11,682,142.97
  5. Step 5: Solve for x
    x = 11,682,142.97/3,925.15
  6. Step 6: Final answer
    x = 2,976.23

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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.