Home / 5,172-7,136.82-2,933.16

Finding the Fourth Proportional to 5,172, 7,136.82 and 2,933.16

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Solution

The fourth proportional to 5,172, 7,136.82 and 2,933.16 is: 4,047.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172 : 7,136.82 = 2,933.16 : x
  2. Step 2: Convert to fraction form
    5,172/7,136.82 = 2,933.16/x
  3. Step 3: Cross multiply
    5,172x = 7,136.82 × 2,933.16
  4. Step 4: Simplify right side
    5,172x = 20,933,434.95
  5. Step 5: Solve for x
    x = 20,933,434.95/5,172
  6. Step 6: Final answer
    x = 4,047.45

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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.