Home / 6,821.30-10,223.10-3,115.35

Finding the Fourth Proportional to 6,821.30, 10,223.10 and 3,115.35

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Solution

The fourth proportional to 6,821.30, 10,223.10 and 3,115.35 is: 4,668.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.30 : 10,223.10 = 3,115.35 : x
  2. Step 2: Convert to fraction form
    6,821.30/10,223.10 = 3,115.35/x
  3. Step 3: Cross multiply
    6,821.30x = 10,223.10 × 3,115.35
  4. Step 4: Simplify right side
    6,821.30x = 31,848,534.59
  5. Step 5: Solve for x
    x = 31,848,534.59/6,821.30
  6. Step 6: Final answer
    x = 4,668.98

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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.