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Finding the Fourth Proportional to 3,950.48, 5,447.58 and 3,392.80

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Solution

The fourth proportional to 3,950.48, 5,447.58 and 3,392.80 is: 4,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950.48 : 5,447.58 = 3,392.80 : x
  2. Step 2: Convert to fraction form
    3,950.48/5,447.58 = 3,392.80/x
  3. Step 3: Cross multiply
    3,950.48x = 5,447.58 × 3,392.80
  4. Step 4: Simplify right side
    3,950.48x = 18,482,549.42
  5. Step 5: Solve for x
    x = 18,482,549.42/3,950.48
  6. Step 6: Final answer
    x = 4,678.56

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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.