Home / 3,187.46-4,398.62-1,790.22

Finding the Fourth Proportional to 3,187.46, 4,398.62 and 1,790.22

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Solution

The fourth proportional to 3,187.46, 4,398.62 and 1,790.22 is: 2,470.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.46 : 4,398.62 = 1,790.22 : x
  2. Step 2: Convert to fraction form
    3,187.46/4,398.62 = 1,790.22/x
  3. Step 3: Cross multiply
    3,187.46x = 4,398.62 × 1,790.22
  4. Step 4: Simplify right side
    3,187.46x = 7,874,497.50
  5. Step 5: Solve for x
    x = 7,874,497.50/3,187.46
  6. Step 6: Final answer
    x = 2,470.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.