Home / 1,816.74-2,724.90-720.41

Finding the Fourth Proportional to 1,816.74, 2,724.90 and 720.41

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Solution

The fourth proportional to 1,816.74, 2,724.90 and 720.41 is: 1,080.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.74 : 2,724.90 = 720.41 : x
  2. Step 2: Convert to fraction form
    1,816.74/2,724.90 = 720.41/x
  3. Step 3: Cross multiply
    1,816.74x = 2,724.90 × 720.41
  4. Step 4: Simplify right side
    1,816.74x = 1,963,031.58
  5. Step 5: Solve for x
    x = 1,963,031.58/1,816.74
  6. Step 6: Final answer
    x = 1,080.52

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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.