Home / 1,820.49-2,728.80-1,171.68

Finding the Fourth Proportional to 1,820.49, 2,728.80 and 1,171.68

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Solution

The fourth proportional to 1,820.49, 2,728.80 and 1,171.68 is: 1,756.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.49 : 2,728.80 = 1,171.68 : x
  2. Step 2: Convert to fraction form
    1,820.49/2,728.80 = 1,171.68/x
  3. Step 3: Cross multiply
    1,820.49x = 2,728.80 × 1,171.68
  4. Step 4: Simplify right side
    1,820.49x = 3,197,280.38
  5. Step 5: Solve for x
    x = 3,197,280.38/1,820.49
  6. Step 6: Final answer
    x = 1,756.27

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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.