Home / 1,816.80-2,724.36-1,086.72

Finding the Fourth Proportional to 1,816.80, 2,724.36 and 1,086.72

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Solution

The fourth proportional to 1,816.80, 2,724.36 and 1,086.72 is: 1,629.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.80 : 2,724.36 = 1,086.72 : x
  2. Step 2: Convert to fraction form
    1,816.80/2,724.36 = 1,086.72/x
  3. Step 3: Cross multiply
    1,816.80x = 2,724.36 × 1,086.72
  4. Step 4: Simplify right side
    1,816.80x = 2,960,616.50
  5. Step 5: Solve for x
    x = 2,960,616.50/1,816.80
  6. Step 6: Final answer
    x = 1,629.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.