Home / 3,187.81-4,398.46-1,790.47

Finding the Fourth Proportional to 3,187.81, 4,398.46 and 1,790.47

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Solution

The fourth proportional to 3,187.81, 4,398.46 and 1,790.47 is: 2,470.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.81 : 4,398.46 = 1,790.47 : x
  2. Step 2: Convert to fraction form
    3,187.81/4,398.46 = 1,790.47/x
  3. Step 3: Cross multiply
    3,187.81x = 4,398.46 × 1,790.47
  4. Step 4: Simplify right side
    3,187.81x = 7,875,310.68
  5. Step 5: Solve for x
    x = 7,875,310.68/3,187.81
  6. Step 6: Final answer
    x = 2,470.45

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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.