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Finding the Fourth Proportional to 3,596.25, 5,394.38 and 999.21

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Solution

The fourth proportional to 3,596.25, 5,394.38 and 999.21 is: 1,498.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,596.25 : 5,394.38 = 999.21 : x
  2. Step 2: Convert to fraction form
    3,596.25/5,394.38 = 999.21/x
  3. Step 3: Cross multiply
    3,596.25x = 5,394.38 × 999.21
  4. Step 4: Simplify right side
    3,596.25x = 5,390,113.44
  5. Step 5: Solve for x
    x = 5,390,113.44/3,596.25
  6. Step 6: Final answer
    x = 1,498.82

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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.