Home / 4,971.89-6,861.84-2,875.61

Finding the Fourth Proportional to 4,971.89, 6,861.84 and 2,875.61

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Solution

The fourth proportional to 4,971.89, 6,861.84 and 2,875.61 is: 3,968.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,971.89 : 6,861.84 = 2,875.61 : x
  2. Step 2: Convert to fraction form
    4,971.89/6,861.84 = 2,875.61/x
  3. Step 3: Cross multiply
    4,971.89x = 6,861.84 × 2,875.61
  4. Step 4: Simplify right side
    4,971.89x = 19,731,975.72
  5. Step 5: Solve for x
    x = 19,731,975.72/4,971.89
  6. Step 6: Final answer
    x = 3,968.71

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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.