Home / 7,142.21-10,713.77-2,211.43

Finding the Fourth Proportional to 7,142.21, 10,713.77 and 2,211.43

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Solution

The fourth proportional to 7,142.21, 10,713.77 and 2,211.43 is: 3,317.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.21 : 10,713.77 = 2,211.43 : x
  2. Step 2: Convert to fraction form
    7,142.21/10,713.77 = 2,211.43/x
  3. Step 3: Cross multiply
    7,142.21x = 10,713.77 × 2,211.43
  4. Step 4: Simplify right side
    7,142.21x = 23,692,752.39
  5. Step 5: Solve for x
    x = 23,692,752.39/7,142.21
  6. Step 6: Final answer
    x = 3,317.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.