Home / 2,167.28-2,990.36-1,235.44

Finding the Fourth Proportional to 2,167.28, 2,990.36 and 1,235.44

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Solution

The fourth proportional to 2,167.28, 2,990.36 and 1,235.44 is: 1,704.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.28 : 2,990.36 = 1,235.44 : x
  2. Step 2: Convert to fraction form
    2,167.28/2,990.36 = 1,235.44/x
  3. Step 3: Cross multiply
    2,167.28x = 2,990.36 × 1,235.44
  4. Step 4: Simplify right side
    2,167.28x = 3,694,410.36
  5. Step 5: Solve for x
    x = 3,694,410.36/2,167.28
  6. Step 6: Final answer
    x = 1,704.63

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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.