Home / 2,128.04-2,936.36-1,243.68

Finding the Fourth Proportional to 2,128.04, 2,936.36 and 1,243.68

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Solution

The fourth proportional to 2,128.04, 2,936.36 and 1,243.68 is: 1,716.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.04 : 2,936.36 = 1,243.68 : x
  2. Step 2: Convert to fraction form
    2,128.04/2,936.36 = 1,243.68/x
  3. Step 3: Cross multiply
    2,128.04x = 2,936.36 × 1,243.68
  4. Step 4: Simplify right side
    2,128.04x = 3,651,892.20
  5. Step 5: Solve for x
    x = 3,651,892.20/2,128.04
  6. Step 6: Final answer
    x = 1,716.08

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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.