Home / 1,455.71-2,179.44-1,161.68

Finding the Fourth Proportional to 1,455.71, 2,179.44 and 1,161.68

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Solution

The fourth proportional to 1,455.71, 2,179.44 and 1,161.68 is: 1,739.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.71 : 2,179.44 = 1,161.68 : x
  2. Step 2: Convert to fraction form
    1,455.71/2,179.44 = 1,161.68/x
  3. Step 3: Cross multiply
    1,455.71x = 2,179.44 × 1,161.68
  4. Step 4: Simplify right side
    1,455.71x = 2,531,800.96
  5. Step 5: Solve for x
    x = 2,531,800.96/1,455.71
  6. Step 6: Final answer
    x = 1,739.23

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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.