Home / 2,127.21-3,190.82-1,159.47

Finding the Fourth Proportional to 2,127.21, 3,190.82 and 1,159.47

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Solution

The fourth proportional to 2,127.21, 3,190.82 and 1,159.47 is: 1,739.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.21 : 3,190.82 = 1,159.47 : x
  2. Step 2: Convert to fraction form
    2,127.21/3,190.82 = 1,159.47/x
  3. Step 3: Cross multiply
    2,127.21x = 3,190.82 × 1,159.47
  4. Step 4: Simplify right side
    2,127.21x = 3,699,660.07
  5. Step 5: Solve for x
    x = 3,699,660.07/2,127.21
  6. Step 6: Final answer
    x = 1,739.21

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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.