Home / 1,980.38-2,966.92-1,761.68

Finding the Fourth Proportional to 1,980.38, 2,966.92 and 1,761.68

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Solution

The fourth proportional to 1,980.38, 2,966.92 and 1,761.68 is: 2,639.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.38 : 2,966.92 = 1,761.68 : x
  2. Step 2: Convert to fraction form
    1,980.38/2,966.92 = 1,761.68/x
  3. Step 3: Cross multiply
    1,980.38x = 2,966.92 × 1,761.68
  4. Step 4: Simplify right side
    1,980.38x = 5,226,763.63
  5. Step 5: Solve for x
    x = 5,226,763.63/1,980.38
  6. Step 6: Final answer
    x = 2,639.27

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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.