Home / 3,163.12-4,742.72-1,315.52

Finding the Fourth Proportional to 3,163.12, 4,742.72 and 1,315.52

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Solution

The fourth proportional to 3,163.12, 4,742.72 and 1,315.52 is: 1,972.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.12 : 4,742.72 = 1,315.52 : x
  2. Step 2: Convert to fraction form
    3,163.12/4,742.72 = 1,315.52/x
  3. Step 3: Cross multiply
    3,163.12x = 4,742.72 × 1,315.52
  4. Step 4: Simplify right side
    3,163.12x = 6,239,143.01
  5. Step 5: Solve for x
    x = 6,239,143.01/3,163.12
  6. Step 6: Final answer
    x = 1,972.46

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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.