Home / 2,605.26-3,589.11-2,155.26

Finding the Fourth Proportional to 2,605.26, 3,589.11 and 2,155.26

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Solution

The fourth proportional to 2,605.26, 3,589.11 and 2,155.26 is: 2,969.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.26 : 3,589.11 = 2,155.26 : x
  2. Step 2: Convert to fraction form
    2,605.26/3,589.11 = 2,155.26/x
  3. Step 3: Cross multiply
    2,605.26x = 3,589.11 × 2,155.26
  4. Step 4: Simplify right side
    2,605.26x = 7,735,458.49
  5. Step 5: Solve for x
    x = 7,735,458.49/2,605.26
  6. Step 6: Final answer
    x = 2,969.17

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1.5x scale

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.