Home / 3,210.22-4,815.34-1,129.74

Finding the Fourth Proportional to 3,210.22, 4,815.34 and 1,129.74

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Solution

The fourth proportional to 3,210.22, 4,815.34 and 1,129.74 is: 1,694.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.22 : 4,815.34 = 1,129.74 : x
  2. Step 2: Convert to fraction form
    3,210.22/4,815.34 = 1,129.74/x
  3. Step 3: Cross multiply
    3,210.22x = 4,815.34 × 1,129.74
  4. Step 4: Simplify right side
    3,210.22x = 5,440,082.21
  5. Step 5: Solve for x
    x = 5,440,082.21/3,210.22
  6. Step 6: Final answer
    x = 1,694.61

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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.