Home / 4,215.35-6,318.10-3,172

Finding the Fourth Proportional to 4,215.35, 6,318.10 and 3,172

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Solution

The fourth proportional to 4,215.35, 6,318.10 and 3,172 is: 4,754.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.35 : 6,318.10 = 3,172 : x
  2. Step 2: Convert to fraction form
    4,215.35/6,318.10 = 3,172/x
  3. Step 3: Cross multiply
    4,215.35x = 6,318.10 × 3,172
  4. Step 4: Simplify right side
    4,215.35x = 20,041,023.11
  5. Step 5: Solve for x
    x = 20,041,023.11/4,215.35
  6. Step 6: Final answer
    x = 4,754.29

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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.