Home / 3,360.69-5,039.96-1,280.61

Finding the Fourth Proportional to 3,360.69, 5,039.96 and 1,280.61

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Solution

The fourth proportional to 3,360.69, 5,039.96 and 1,280.61 is: 1,920.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,360.69 : 5,039.96 = 1,280.61 : x
  2. Step 2: Convert to fraction form
    3,360.69/5,039.96 = 1,280.61/x
  3. Step 3: Cross multiply
    3,360.69x = 5,039.96 × 1,280.61
  4. Step 4: Simplify right side
    3,360.69x = 6,454,216.77
  5. Step 5: Solve for x
    x = 6,454,216.77/3,360.69
  6. Step 6: Final answer
    x = 1,920.50

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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.