Home / 5,157.75-7,116.87-2,918.91

Finding the Fourth Proportional to 5,157.75, 7,116.87 and 2,918.91

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Solution

The fourth proportional to 5,157.75, 7,116.87 and 2,918.91 is: 4,027.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.75 : 7,116.87 = 2,918.91 : x
  2. Step 2: Convert to fraction form
    5,157.75/7,116.87 = 2,918.91/x
  3. Step 3: Cross multiply
    5,157.75x = 7,116.87 × 2,918.91
  4. Step 4: Simplify right side
    5,157.75x = 20,773,503.01
  5. Step 5: Solve for x
    x = 20,773,503.01/5,157.75
  6. Step 6: Final answer
    x = 4,027.63

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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.