Home / 5,157.42-7,116.72-2,918.91

Finding the Fourth Proportional to 5,157.42, 7,116.72 and 2,918.91

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Solution

The fourth proportional to 5,157.42, 7,116.72 and 2,918.91 is: 4,027.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.42 : 7,116.72 = 2,918.91 : x
  2. Step 2: Convert to fraction form
    5,157.42/7,116.72 = 2,918.91/x
  3. Step 3: Cross multiply
    5,157.42x = 7,116.72 × 2,918.91
  4. Step 4: Simplify right side
    5,157.42x = 20,773,076.12
  5. Step 5: Solve for x
    x = 20,773,076.12/5,157.42
  6. Step 6: Final answer
    x = 4,027.80

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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.