Home / 3,280.12-4,923.00-1,721.21

Finding the Fourth Proportional to 3,280.12, 4,923.00 and 1,721.21

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Solution

The fourth proportional to 3,280.12, 4,923.00 and 1,721.21 is: 2,583.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.12 : 4,923.00 = 1,721.21 : x
  2. Step 2: Convert to fraction form
    3,280.12/4,923.00 = 1,721.21/x
  3. Step 3: Cross multiply
    3,280.12x = 4,923.00 × 1,721.21
  4. Step 4: Simplify right side
    3,280.12x = 8,473,483.61
  5. Step 5: Solve for x
    x = 8,473,483.61/3,280.12
  6. Step 6: Final answer
    x = 2,583.29

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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.