Home / 2,133.28-2,943.30-1,249.12

Finding the Fourth Proportional to 2,133.28, 2,943.30 and 1,249.12

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Solution

The fourth proportional to 2,133.28, 2,943.30 and 1,249.12 is: 1,723.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.28 : 2,943.30 = 1,249.12 : x
  2. Step 2: Convert to fraction form
    2,133.28/2,943.30 = 1,249.12/x
  3. Step 3: Cross multiply
    2,133.28x = 2,943.30 × 1,249.12
  4. Step 4: Simplify right side
    2,133.28x = 3,676,534.90
  5. Step 5: Solve for x
    x = 3,676,534.90/2,133.28
  6. Step 6: Final answer
    x = 1,723.42

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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.