Home / 5,156.87-7,116.80-2,918.97

Finding the Fourth Proportional to 5,156.87, 7,116.80 and 2,918.97

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Solution

The fourth proportional to 5,156.87, 7,116.80 and 2,918.97 is: 4,028.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.87 : 7,116.80 = 2,918.97 : x
  2. Step 2: Convert to fraction form
    5,156.87/7,116.80 = 2,918.97/x
  3. Step 3: Cross multiply
    5,156.87x = 7,116.80 × 2,918.97
  4. Step 4: Simplify right side
    5,156.87x = 20,773,711.10
  5. Step 5: Solve for x
    x = 20,773,711.10/5,156.87
  6. Step 6: Final answer
    x = 4,028.36

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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.