Home / 2,127.79-2,936.55-1,243.54

Finding the Fourth Proportional to 2,127.79, 2,936.55 and 1,243.54

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Solution

The fourth proportional to 2,127.79, 2,936.55 and 1,243.54 is: 1,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.79 : 2,936.55 = 1,243.54 : x
  2. Step 2: Convert to fraction form
    2,127.79/2,936.55 = 1,243.54/x
  3. Step 3: Cross multiply
    2,127.79x = 2,936.55 × 1,243.54
  4. Step 4: Simplify right side
    2,127.79x = 3,651,717.39
  5. Step 5: Solve for x
    x = 3,651,717.39/2,127.79
  6. Step 6: Final answer
    x = 1,716.20

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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.