Home / 4,971.92-6,861.44-2,981.75

Finding the Fourth Proportional to 4,971.92, 6,861.44 and 2,981.75

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Solution

The fourth proportional to 4,971.92, 6,861.44 and 2,981.75 is: 4,114.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,971.92 : 6,861.44 = 2,981.75 : x
  2. Step 2: Convert to fraction form
    4,971.92/6,861.44 = 2,981.75/x
  3. Step 3: Cross multiply
    4,971.92x = 6,861.44 × 2,981.75
  4. Step 4: Simplify right side
    4,971.92x = 20,459,071.87
  5. Step 5: Solve for x
    x = 20,459,071.87/4,971.92
  6. Step 6: Final answer
    x = 4,114.93

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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.