Home / 4,980.71-6,876.14-2,991.75

Finding the Fourth Proportional to 4,980.71, 6,876.14 and 2,991.75

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Solution

The fourth proportional to 4,980.71, 6,876.14 and 2,991.75 is: 4,130.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.71 : 6,876.14 = 2,991.75 : x
  2. Step 2: Convert to fraction form
    4,980.71/6,876.14 = 2,991.75/x
  3. Step 3: Cross multiply
    4,980.71x = 6,876.14 × 2,991.75
  4. Step 4: Simplify right side
    4,980.71x = 20,571,676.89
  5. Step 5: Solve for x
    x = 20,571,676.89/4,980.71
  6. Step 6: Final answer
    x = 4,130.27

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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.