Home / 5,811.12-8,019.41-3,158.56

Finding the Fourth Proportional to 5,811.12, 8,019.41 and 3,158.56

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Solution

The fourth proportional to 5,811.12, 8,019.41 and 3,158.56 is: 4,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.12 : 8,019.41 = 3,158.56 : x
  2. Step 2: Convert to fraction form
    5,811.12/8,019.41 = 3,158.56/x
  3. Step 3: Cross multiply
    5,811.12x = 8,019.41 × 3,158.56
  4. Step 4: Simplify right side
    5,811.12x = 25,329,787.65
  5. Step 5: Solve for x
    x = 25,329,787.65/5,811.12
  6. Step 6: Final answer
    x = 4,358.85

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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.