Home / 5,179.16-7,146.99-2,821.29

Finding the Fourth Proportional to 5,179.16, 7,146.99 and 2,821.29

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Solution

The fourth proportional to 5,179.16, 7,146.99 and 2,821.29 is: 3,893.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.16 : 7,146.99 = 2,821.29 : x
  2. Step 2: Convert to fraction form
    5,179.16/7,146.99 = 2,821.29/x
  3. Step 3: Cross multiply
    5,179.16x = 7,146.99 × 2,821.29
  4. Step 4: Simplify right side
    5,179.16x = 20,163,731.42
  5. Step 5: Solve for x
    x = 20,163,731.42/5,179.16
  6. Step 6: Final answer
    x = 3,893.25

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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.