Home / 3,994.28-5,506.40-2,811.68

Finding the Fourth Proportional to 3,994.28, 5,506.40 and 2,811.68

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Solution

The fourth proportional to 3,994.28, 5,506.40 and 2,811.68 is: 3,876.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.28 : 5,506.40 = 2,811.68 : x
  2. Step 2: Convert to fraction form
    3,994.28/5,506.40 = 2,811.68/x
  3. Step 3: Cross multiply
    3,994.28x = 5,506.40 × 2,811.68
  4. Step 4: Simplify right side
    3,994.28x = 15,482,234.75
  5. Step 5: Solve for x
    x = 15,482,234.75/3,994.28
  6. Step 6: Final answer
    x = 3,876.10

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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.