Home / 1,932.90-2,666.41-1,223.54

Finding the Fourth Proportional to 1,932.90, 2,666.41 and 1,223.54

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Solution

The fourth proportional to 1,932.90, 2,666.41 and 1,223.54 is: 1,687.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,932.90 : 2,666.41 = 1,223.54 : x
  2. Step 2: Convert to fraction form
    1,932.90/2,666.41 = 1,223.54/x
  3. Step 3: Cross multiply
    1,932.90x = 2,666.41 × 1,223.54
  4. Step 4: Simplify right side
    1,932.90x = 3,262,459.29
  5. Step 5: Solve for x
    x = 3,262,459.29/1,932.90
  6. Step 6: Final answer
    x = 1,687.86

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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.