Home / 2,107.04-3,160.10-645.80

Finding the Fourth Proportional to 2,107.04, 3,160.10 and 645.80

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Solution

The fourth proportional to 2,107.04, 3,160.10 and 645.80 is: 968.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.04 : 3,160.10 = 645.80 : x
  2. Step 2: Convert to fraction form
    2,107.04/3,160.10 = 645.80/x
  3. Step 3: Cross multiply
    2,107.04x = 3,160.10 × 645.80
  4. Step 4: Simplify right side
    2,107.04x = 2,040,792.58
  5. Step 5: Solve for x
    x = 2,040,792.58/2,107.04
  6. Step 6: Final answer
    x = 968.56

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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.