Home / 6,816.84-10,215.50-5,423.90

Finding the Fourth Proportional to 6,816.84, 10,215.50 and 5,423.90

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Solution

The fourth proportional to 6,816.84, 10,215.50 and 5,423.90 is: 8,128.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,816.84 : 10,215.50 = 5,423.90 : x
  2. Step 2: Convert to fraction form
    6,816.84/10,215.50 = 5,423.90/x
  3. Step 3: Cross multiply
    6,816.84x = 10,215.50 × 5,423.90
  4. Step 4: Simplify right side
    6,816.84x = 55,407,850.45
  5. Step 5: Solve for x
    x = 55,407,850.45/6,816.84
  6. Step 6: Final answer
    x = 8,128.08

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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.