Home / 2,107.05-3,160.61-646.22

Finding the Fourth Proportional to 2,107.05, 3,160.61 and 646.22

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Solution

The fourth proportional to 2,107.05, 3,160.61 and 646.22 is: 969.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.05 : 3,160.61 = 646.22 : x
  2. Step 2: Convert to fraction form
    2,107.05/3,160.61 = 646.22/x
  3. Step 3: Cross multiply
    2,107.05x = 3,160.61 × 646.22
  4. Step 4: Simplify right side
    2,107.05x = 2,042,430.36
  5. Step 5: Solve for x
    x = 2,042,430.36/2,107.05
  6. Step 6: Final answer
    x = 969.33

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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.