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Finding the Fourth Proportional to 3,798.79, 5,242.08 and 2,382.42

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Solution

The fourth proportional to 3,798.79, 5,242.08 and 2,382.42 is: 3,287.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,798.79 : 5,242.08 = 2,382.42 : x
  2. Step 2: Convert to fraction form
    3,798.79/5,242.08 = 2,382.42/x
  3. Step 3: Cross multiply
    3,798.79x = 5,242.08 × 2,382.42
  4. Step 4: Simplify right side
    3,798.79x = 12,488,836.23
  5. Step 5: Solve for x
    x = 12,488,836.23/3,798.79
  6. Step 6: Final answer
    x = 3,287.58

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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.