Home / 1,640.73-2,263.68-977.34

Finding the Fourth Proportional to 1,640.73, 2,263.68 and 977.34

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Solution

The fourth proportional to 1,640.73, 2,263.68 and 977.34 is: 1,348.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.73 : 2,263.68 = 977.34 : x
  2. Step 2: Convert to fraction form
    1,640.73/2,263.68 = 977.34/x
  3. Step 3: Cross multiply
    1,640.73x = 2,263.68 × 977.34
  4. Step 4: Simplify right side
    1,640.73x = 2,212,385.01
  5. Step 5: Solve for x
    x = 2,212,385.01/1,640.73
  6. Step 6: Final answer
    x = 1,348.42

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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.