Home / 5,138.28-7,090.88-3,042

Finding the Fourth Proportional to 5,138.28, 7,090.88 and 3,042

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Solution

The fourth proportional to 5,138.28, 7,090.88 and 3,042 is: 4,197.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.28 : 7,090.88 = 3,042 : x
  2. Step 2: Convert to fraction form
    5,138.28/7,090.88 = 3,042/x
  3. Step 3: Cross multiply
    5,138.28x = 7,090.88 × 3,042
  4. Step 4: Simplify right side
    5,138.28x = 21,570,441.75
  5. Step 5: Solve for x
    x = 21,570,441.75/5,138.28
  6. Step 6: Final answer
    x = 4,197.99

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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.