Home / 5,241.36-7,861.98-2,121.32

Finding the Fourth Proportional to 5,241.36, 7,861.98 and 2,121.32

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Solution

The fourth proportional to 5,241.36, 7,861.98 and 2,121.32 is: 3,181.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,241.36 : 7,861.98 = 2,121.32 : x
  2. Step 2: Convert to fraction form
    5,241.36/7,861.98 = 2,121.32/x
  3. Step 3: Cross multiply
    5,241.36x = 7,861.98 × 2,121.32
  4. Step 4: Simplify right side
    5,241.36x = 16,677,775.41
  5. Step 5: Solve for x
    x = 16,677,775.41/5,241.36
  6. Step 6: Final answer
    x = 3,181.96

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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.