Home / 3,280.24-4,917.12-1,816.32

Finding the Fourth Proportional to 3,280.24, 4,917.12 and 1,816.32

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Solution

The fourth proportional to 3,280.24, 4,917.12 and 1,816.32 is: 2,722.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.24 : 4,917.12 = 1,816.32 : x
  2. Step 2: Convert to fraction form
    3,280.24/4,917.12 = 1,816.32/x
  3. Step 3: Cross multiply
    3,280.24x = 4,917.12 × 1,816.32
  4. Step 4: Simplify right side
    3,280.24x = 8,931,063.40
  5. Step 5: Solve for x
    x = 8,931,063.40/3,280.24
  6. Step 6: Final answer
    x = 2,722.69

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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.