Home / 3,925.80-5,416.92-2,981.34

Finding the Fourth Proportional to 3,925.80, 5,416.92 and 2,981.34

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Solution

The fourth proportional to 3,925.80, 5,416.92 and 2,981.34 is: 4,113.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,925.80 : 5,416.92 = 2,981.34 : x
  2. Step 2: Convert to fraction form
    3,925.80/5,416.92 = 2,981.34/x
  3. Step 3: Cross multiply
    3,925.80x = 5,416.92 × 2,981.34
  4. Step 4: Simplify right side
    3,925.80x = 16,149,680.27
  5. Step 5: Solve for x
    x = 16,149,680.27/3,925.80
  6. Step 6: Final answer
    x = 4,113.73

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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.