Home / 4,811.61-7,211.91-2,181.12

Finding the Fourth Proportional to 4,811.61, 7,211.91 and 2,181.12

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Solution

The fourth proportional to 4,811.61, 7,211.91 and 2,181.12 is: 3,269.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.61 : 7,211.91 = 2,181.12 : x
  2. Step 2: Convert to fraction form
    4,811.61/7,211.91 = 2,181.12/x
  3. Step 3: Cross multiply
    4,811.61x = 7,211.91 × 2,181.12
  4. Step 4: Simplify right side
    4,811.61x = 15,730,041.14
  5. Step 5: Solve for x
    x = 15,730,041.14/4,811.61
  6. Step 6: Final answer
    x = 3,269.18

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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.