Home / 5,231.21-7,218.99-2,841.17

Finding the Fourth Proportional to 5,231.21, 7,218.99 and 2,841.17

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Solution

The fourth proportional to 5,231.21, 7,218.99 and 2,841.17 is: 3,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.21 : 7,218.99 = 2,841.17 : x
  2. Step 2: Convert to fraction form
    5,231.21/7,218.99 = 2,841.17/x
  3. Step 3: Cross multiply
    5,231.21x = 7,218.99 × 2,841.17
  4. Step 4: Simplify right side
    5,231.21x = 20,510,341.72
  5. Step 5: Solve for x
    x = 20,510,341.72/5,231.21
  6. Step 6: Final answer
    x = 3,920.77

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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.