Home / 3,925.24-5,416.78-2,156.80

Finding the Fourth Proportional to 3,925.24, 5,416.78 and 2,156.80

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Solution

The fourth proportional to 3,925.24, 5,416.78 and 2,156.80 is: 2,976.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.24 : 5,416.78 = 2,156.80 : x
  2. Step 2: Convert to fraction form
    3,925.24/5,416.78 = 2,156.80/x
  3. Step 3: Cross multiply
    3,925.24x = 5,416.78 × 2,156.80
  4. Step 4: Simplify right side
    3,925.24x = 11,682,911.10
  5. Step 5: Solve for x
    x = 11,682,911.10/3,925.24
  6. Step 6: Final answer
    x = 2,976.36

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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.