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Finding the Fourth Proportional to 2,107.45, 3,160.38 and 626.38

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Solution

The fourth proportional to 2,107.45, 3,160.38 and 626.38 is: 939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.45 : 3,160.38 = 626.38 : x
  2. Step 2: Convert to fraction form
    2,107.45/3,160.38 = 626.38/x
  3. Step 3: Cross multiply
    2,107.45x = 3,160.38 × 626.38
  4. Step 4: Simplify right side
    2,107.45x = 1,979,598.82
  5. Step 5: Solve for x
    x = 1,979,598.82/2,107.45
  6. Step 6: Final answer
    x = 939.33

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1.5x scale

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.