Home / 1,724.36-2,380.74-1,135.90

Finding the Fourth Proportional to 1,724.36, 2,380.74 and 1,135.90

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Solution

The fourth proportional to 1,724.36, 2,380.74 and 1,135.90 is: 1,568.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.36 : 2,380.74 = 1,135.90 : x
  2. Step 2: Convert to fraction form
    1,724.36/2,380.74 = 1,135.90/x
  3. Step 3: Cross multiply
    1,724.36x = 2,380.74 × 1,135.90
  4. Step 4: Simplify right side
    1,724.36x = 2,704,270.66
  5. Step 5: Solve for x
    x = 2,704,270.66/1,724.36
  6. Step 6: Final answer
    x = 1,568.27

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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.