Home / 5,172-7,137.45-2,814.18

Finding the Fourth Proportional to 5,172, 7,137.45 and 2,814.18

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Solution

The fourth proportional to 5,172, 7,137.45 and 2,814.18 is: 3,883.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172 : 7,137.45 = 2,814.18 : x
  2. Step 2: Convert to fraction form
    5,172/7,137.45 = 2,814.18/x
  3. Step 3: Cross multiply
    5,172x = 7,137.45 × 2,814.18
  4. Step 4: Simplify right side
    5,172x = 20,086,069.04
  5. Step 5: Solve for x
    x = 20,086,069.04/5,172
  6. Step 6: Final answer
    x = 3,883.62

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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.