Home / 5,173.82-7,139.77-2,874.13

Finding the Fourth Proportional to 5,173.82, 7,139.77 and 2,874.13

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Solution

The fourth proportional to 5,173.82, 7,139.77 and 2,874.13 is: 3,966.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.82 : 7,139.77 = 2,874.13 : x
  2. Step 2: Convert to fraction form
    5,173.82/7,139.77 = 2,874.13/x
  3. Step 3: Cross multiply
    5,173.82x = 7,139.77 × 2,874.13
  4. Step 4: Simplify right side
    5,173.82x = 20,520,627.15
  5. Step 5: Solve for x
    x = 20,520,627.15/5,173.82
  6. Step 6: Final answer
    x = 3,966.24

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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.