Home / 5,811.85-8,716.92-1,915.75

Finding the Fourth Proportional to 5,811.85, 8,716.92 and 1,915.75

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Solution

The fourth proportional to 5,811.85, 8,716.92 and 1,915.75 is: 2,873.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.85 : 8,716.92 = 1,915.75 : x
  2. Step 2: Convert to fraction form
    5,811.85/8,716.92 = 1,915.75/x
  3. Step 3: Cross multiply
    5,811.85x = 8,716.92 × 1,915.75
  4. Step 4: Simplify right side
    5,811.85x = 16,699,439.49
  5. Step 5: Solve for x
    x = 16,699,439.49/5,811.85
  6. Step 6: Final answer
    x = 2,873.34

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1.5x scale

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.