Home / 3,415.46-5,120.73-1,333.71

Finding the Fourth Proportional to 3,415.46, 5,120.73 and 1,333.71

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Solution

The fourth proportional to 3,415.46, 5,120.73 and 1,333.71 is: 1,999.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.46 : 5,120.73 = 1,333.71 : x
  2. Step 2: Convert to fraction form
    3,415.46/5,120.73 = 1,333.71/x
  3. Step 3: Cross multiply
    3,415.46x = 5,120.73 × 1,333.71
  4. Step 4: Simplify right side
    3,415.46x = 6,829,568.81
  5. Step 5: Solve for x
    x = 6,829,568.81/3,415.46
  6. Step 6: Final answer
    x = 1,999.61

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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.