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Finding the Fourth Proportional to 3,992.69, 5,509.79 and 2,501.42

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Solution

The fourth proportional to 3,992.69, 5,509.79 and 2,501.42 is: 3,451.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.69 : 5,509.79 = 2,501.42 : x
  2. Step 2: Convert to fraction form
    3,992.69/5,509.79 = 2,501.42/x
  3. Step 3: Cross multiply
    3,992.69x = 5,509.79 × 2,501.42
  4. Step 4: Simplify right side
    3,992.69x = 13,782,268.23
  5. Step 5: Solve for x
    x = 13,782,268.23/3,992.69
  6. Step 6: Final answer
    x = 3,451.87

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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.