Home / 2,811.32-4,206.90-1,715.96

Finding the Fourth Proportional to 2,811.32, 4,206.90 and 1,715.96

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Solution

The fourth proportional to 2,811.32, 4,206.90 and 1,715.96 is: 2,567.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.32 : 4,206.90 = 1,715.96 : x
  2. Step 2: Convert to fraction form
    2,811.32/4,206.90 = 1,715.96/x
  3. Step 3: Cross multiply
    2,811.32x = 4,206.90 × 1,715.96
  4. Step 4: Simplify right side
    2,811.32x = 7,218,872.12
  5. Step 5: Solve for x
    x = 7,218,872.12/2,811.32
  6. Step 6: Final answer
    x = 2,567.79

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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.