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Finding the Fourth Proportional to 4,185, 6,278.49 and 2,429.55

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Solution

The fourth proportional to 4,185, 6,278.49 and 2,429.55 is: 3,644.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,185 : 6,278.49 = 2,429.55 : x
  2. Step 2: Convert to fraction form
    4,185/6,278.49 = 2,429.55/x
  3. Step 3: Cross multiply
    4,185x = 6,278.49 × 2,429.55
  4. Step 4: Simplify right side
    4,185x = 15,253,905.38
  5. Step 5: Solve for x
    x = 15,253,905.38/4,185
  6. Step 6: Final answer
    x = 3,644.90

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1.5x scale

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.