Home / 2,107.22-3,160.76-646.25

Finding the Fourth Proportional to 2,107.22, 3,160.76 and 646.25

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Solution

The fourth proportional to 2,107.22, 3,160.76 and 646.25 is: 969.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.22 : 3,160.76 = 646.25 : x
  2. Step 2: Convert to fraction form
    2,107.22/3,160.76 = 646.25/x
  3. Step 3: Cross multiply
    2,107.22x = 3,160.76 × 646.25
  4. Step 4: Simplify right side
    2,107.22x = 2,042,622.11
  5. Step 5: Solve for x
    x = 2,042,622.11/2,107.22
  6. Step 6: Final answer
    x = 969.35

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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.