Home / 1,789.17-2,678.90-1,171.35

Finding the Fourth Proportional to 1,789.17, 2,678.90 and 1,171.35

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Solution

The fourth proportional to 1,789.17, 2,678.90 and 1,171.35 is: 1,753.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.17 : 2,678.90 = 1,171.35 : x
  2. Step 2: Convert to fraction form
    1,789.17/2,678.90 = 1,171.35/x
  3. Step 3: Cross multiply
    1,789.17x = 2,678.90 × 1,171.35
  4. Step 4: Simplify right side
    1,789.17x = 3,137,923.66
  5. Step 5: Solve for x
    x = 3,137,923.66/1,789.17
  6. Step 6: Final answer
    x = 1,753.84

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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.