Home / 5,186.78-7,157.96-2,948.58

Finding the Fourth Proportional to 5,186.78, 7,157.96 and 2,948.58

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Solution

The fourth proportional to 5,186.78, 7,157.96 and 2,948.58 is: 4,069.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.78 : 7,157.96 = 2,948.58 : x
  2. Step 2: Convert to fraction form
    5,186.78/7,157.96 = 2,948.58/x
  3. Step 3: Cross multiply
    5,186.78x = 7,157.96 × 2,948.58
  4. Step 4: Simplify right side
    5,186.78x = 21,105,817.70
  5. Step 5: Solve for x
    x = 21,105,817.70/5,186.78
  6. Step 6: Final answer
    x = 4,069.16

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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.