Home / 2,612.09-3,589.36-2,087.21

Finding the Fourth Proportional to 2,612.09, 3,589.36 and 2,087.21

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Solution

The fourth proportional to 2,612.09, 3,589.36 and 2,087.21 is: 2,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.09 : 3,589.36 = 2,087.21 : x
  2. Step 2: Convert to fraction form
    2,612.09/3,589.36 = 2,087.21/x
  3. Step 3: Cross multiply
    2,612.09x = 3,589.36 × 2,087.21
  4. Step 4: Simplify right side
    2,612.09x = 7,491,748.09
  5. Step 5: Solve for x
    x = 7,491,748.09/2,612.09
  6. Step 6: Final answer
    x = 2,868.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.