Home / 2,640.16-3,965.79-1,666.96

Finding the Fourth Proportional to 2,640.16, 3,965.79 and 1,666.96

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Solution

The fourth proportional to 2,640.16, 3,965.79 and 1,666.96 is: 2,503.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.16 : 3,965.79 = 1,666.96 : x
  2. Step 2: Convert to fraction form
    2,640.16/3,965.79 = 1,666.96/x
  3. Step 3: Cross multiply
    2,640.16x = 3,965.79 × 1,666.96
  4. Step 4: Simplify right side
    2,640.16x = 6,610,813.30
  5. Step 5: Solve for x
    x = 6,610,813.30/2,640.16
  6. Step 6: Final answer
    x = 2,503.94

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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.