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Finding the Fourth Proportional to 3,665.88, 5,488.44 and 3,319.92

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Solution

The fourth proportional to 3,665.88, 5,488.44 and 3,319.92 is: 4,970.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,665.88 : 5,488.44 = 3,319.92 : x
  2. Step 2: Convert to fraction form
    3,665.88/5,488.44 = 3,319.92/x
  3. Step 3: Cross multiply
    3,665.88x = 5,488.44 × 3,319.92
  4. Step 4: Simplify right side
    3,665.88x = 18,221,181.72
  5. Step 5: Solve for x
    x = 18,221,181.72/3,665.88
  6. Step 6: Final answer
    x = 4,970.48

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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.