Home / 5,156.77-7,116.50-2,918.60

Finding the Fourth Proportional to 5,156.77, 7,116.50 and 2,918.60

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Solution

The fourth proportional to 5,156.77, 7,116.50 and 2,918.60 is: 4,027.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.77 : 7,116.50 = 2,918.60 : x
  2. Step 2: Convert to fraction form
    5,156.77/7,116.50 = 2,918.60/x
  3. Step 3: Cross multiply
    5,156.77x = 7,116.50 × 2,918.60
  4. Step 4: Simplify right side
    5,156.77x = 20,770,241.99
  5. Step 5: Solve for x
    x = 20,770,241.99/5,156.77
  6. Step 6: Final answer
    x = 4,027.76

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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.