Home / 2,116.54-3,171.06-1,423.79

Finding the Fourth Proportional to 2,116.54, 3,171.06 and 1,423.79

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Solution

The fourth proportional to 2,116.54, 3,171.06 and 1,423.79 is: 2,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.54 : 3,171.06 = 1,423.79 : x
  2. Step 2: Convert to fraction form
    2,116.54/3,171.06 = 1,423.79/x
  3. Step 3: Cross multiply
    2,116.54x = 3,171.06 × 1,423.79
  4. Step 4: Simplify right side
    2,116.54x = 4,514,907.66
  5. Step 5: Solve for x
    x = 4,514,907.66/2,116.54
  6. Step 6: Final answer
    x = 2,133.15

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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.