Home / 5,121.98-7,069.00-2,884.28

Finding the Fourth Proportional to 5,121.98, 7,069.00 and 2,884.28

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Solution

The fourth proportional to 5,121.98, 7,069.00 and 2,884.28 is: 3,980.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.98 : 7,069.00 = 2,884.28 : x
  2. Step 2: Convert to fraction form
    5,121.98/7,069.00 = 2,884.28/x
  3. Step 3: Cross multiply
    5,121.98x = 7,069.00 × 2,884.28
  4. Step 4: Simplify right side
    5,121.98x = 20,388,985.78
  5. Step 5: Solve for x
    x = 20,388,985.78/5,121.98
  6. Step 6: Final answer
    x = 3,980.69

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1.5x scale

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.