Home / 2,127.33-3,190.73-810.81

Finding the Fourth Proportional to 2,127.33, 3,190.73 and 810.81

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Solution

The fourth proportional to 2,127.33, 3,190.73 and 810.81 is: 1,216.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.33 : 3,190.73 = 810.81 : x
  2. Step 2: Convert to fraction form
    2,127.33/3,190.73 = 810.81/x
  3. Step 3: Cross multiply
    2,127.33x = 3,190.73 × 810.81
  4. Step 4: Simplify right side
    2,127.33x = 2,587,071.74
  5. Step 5: Solve for x
    x = 2,587,071.74/2,127.33
  6. Step 6: Final answer
    x = 1,216.11

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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.