Home / 2,811.21-4,217.28-1,056.35

Finding the Fourth Proportional to 2,811.21, 4,217.28 and 1,056.35

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Solution

The fourth proportional to 2,811.21, 4,217.28 and 1,056.35 is: 1,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.21 : 4,217.28 = 1,056.35 : x
  2. Step 2: Convert to fraction form
    2,811.21/4,217.28 = 1,056.35/x
  3. Step 3: Cross multiply
    2,811.21x = 4,217.28 × 1,056.35
  4. Step 4: Simplify right side
    2,811.21x = 4,454,923.73
  5. Step 5: Solve for x
    x = 4,454,923.73/2,811.21
  6. Step 6: Final answer
    x = 1,584.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.