Home / 2,187.77-3,280.95-726.53

Finding the Fourth Proportional to 2,187.77, 3,280.95 and 726.53

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Solution

The fourth proportional to 2,187.77, 3,280.95 and 726.53 is: 1,089.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.77 : 3,280.95 = 726.53 : x
  2. Step 2: Convert to fraction form
    2,187.77/3,280.95 = 726.53/x
  3. Step 3: Cross multiply
    2,187.77x = 3,280.95 × 726.53
  4. Step 4: Simplify right side
    2,187.77x = 2,383,704.97
  5. Step 5: Solve for x
    x = 2,383,704.97/2,187.77
  6. Step 6: Final answer
    x = 1,089.56

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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.