Home / 2,620.90-3,932.54-1,140.58

Finding the Fourth Proportional to 2,620.90, 3,932.54 and 1,140.58

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Solution

The fourth proportional to 2,620.90, 3,932.54 and 1,140.58 is: 1,711.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.90 : 3,932.54 = 1,140.58 : x
  2. Step 2: Convert to fraction form
    2,620.90/3,932.54 = 1,140.58/x
  3. Step 3: Cross multiply
    2,620.90x = 3,932.54 × 1,140.58
  4. Step 4: Simplify right side
    2,620.90x = 4,485,376.47
  5. Step 5: Solve for x
    x = 4,485,376.47/2,620.90
  6. Step 6: Final answer
    x = 1,711.39

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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.