Home / 4,209.98-6,315.90-1,288.04

Finding the Fourth Proportional to 4,209.98, 6,315.90 and 1,288.04

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Solution

The fourth proportional to 4,209.98, 6,315.90 and 1,288.04 is: 1,932.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.98 : 6,315.90 = 1,288.04 : x
  2. Step 2: Convert to fraction form
    4,209.98/6,315.90 = 1,288.04/x
  3. Step 3: Cross multiply
    4,209.98x = 6,315.90 × 1,288.04
  4. Step 4: Simplify right side
    4,209.98x = 8,135,131.84
  5. Step 5: Solve for x
    x = 8,135,131.84/4,209.98
  6. Step 6: Final answer
    x = 1,932.34

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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.