Home / 5,110.58-7,661.68-1,821.80

Finding the Fourth Proportional to 5,110.58, 7,661.68 and 1,821.80

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Solution

The fourth proportional to 5,110.58, 7,661.68 and 1,821.80 is: 2,731.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.58 : 7,661.68 = 1,821.80 : x
  2. Step 2: Convert to fraction form
    5,110.58/7,661.68 = 1,821.80/x
  3. Step 3: Cross multiply
    5,110.58x = 7,661.68 × 1,821.80
  4. Step 4: Simplify right side
    5,110.58x = 13,958,048.62
  5. Step 5: Solve for x
    x = 13,958,048.62/5,110.58
  6. Step 6: Final answer
    x = 2,731.21

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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.