Home / 2,187.25-3,280.84-543.82

Finding the Fourth Proportional to 2,187.25, 3,280.84 and 543.82

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Solution

The fourth proportional to 2,187.25, 3,280.84 and 543.82 is: 815.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.25 : 3,280.84 = 543.82 : x
  2. Step 2: Convert to fraction form
    2,187.25/3,280.84 = 543.82/x
  3. Step 3: Cross multiply
    2,187.25x = 3,280.84 × 543.82
  4. Step 4: Simplify right side
    2,187.25x = 1,784,186.41
  5. Step 5: Solve for x
    x = 1,784,186.41/2,187.25
  6. Step 6: Final answer
    x = 815.72

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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.