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Finding the Fourth Proportional to 6,830.46, 9,423.10 and 3,918.46

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Solution

The fourth proportional to 6,830.46, 9,423.10 and 3,918.46 is: 5,405.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,830.46 : 9,423.10 = 3,918.46 : x
  2. Step 2: Convert to fraction form
    6,830.46/9,423.10 = 3,918.46/x
  3. Step 3: Cross multiply
    6,830.46x = 9,423.10 × 3,918.46
  4. Step 4: Simplify right side
    6,830.46x = 36,924,040.43
  5. Step 5: Solve for x
    x = 36,924,040.43/6,830.46
  6. Step 6: Final answer
    x = 5,405.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.