Home / 5,170.50-7,128-3,682.13

Finding the Fourth Proportional to 5,170.50, 7,128 and 3,682.13

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Solution

The fourth proportional to 5,170.50, 7,128 and 3,682.13 is: 5,076.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.50 : 7,128 = 3,682.13 : x
  2. Step 2: Convert to fraction form
    5,170.50/7,128 = 3,682.13/x
  3. Step 3: Cross multiply
    5,170.50x = 7,128 × 3,682.13
  4. Step 4: Simplify right side
    5,170.50x = 26,246,187
  5. Step 5: Solve for x
    x = 26,246,187/5,170.50
  6. Step 6: Final answer
    x = 5,076.14

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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.