Home / 4,212.46-6,315.58-1,438.39

Finding the Fourth Proportional to 4,212.46, 6,315.58 and 1,438.39

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Solution

The fourth proportional to 4,212.46, 6,315.58 and 1,438.39 is: 2,156.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.46 : 6,315.58 = 1,438.39 : x
  2. Step 2: Convert to fraction form
    4,212.46/6,315.58 = 1,438.39/x
  3. Step 3: Cross multiply
    4,212.46x = 6,315.58 × 1,438.39
  4. Step 4: Simplify right side
    4,212.46x = 9,084,267.12
  5. Step 5: Solve for x
    x = 9,084,267.12/4,212.46
  6. Step 6: Final answer
    x = 2,156.52

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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.