Home / 1,816.94-2,724.46-720.74

Finding the Fourth Proportional to 1,816.94, 2,724.46 and 720.74

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Solution

The fourth proportional to 1,816.94, 2,724.46 and 720.74 is: 1,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.94 : 2,724.46 = 720.74 : x
  2. Step 2: Convert to fraction form
    1,816.94/2,724.46 = 720.74/x
  3. Step 3: Cross multiply
    1,816.94x = 2,724.46 × 720.74
  4. Step 4: Simplify right side
    1,816.94x = 1,963,627.30
  5. Step 5: Solve for x
    x = 1,963,627.30/1,816.94
  6. Step 6: Final answer
    x = 1,080.73

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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.