Home / 2,106.09-3,155.18-1,761.64

Finding the Fourth Proportional to 2,106.09, 3,155.18 and 1,761.64

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Solution

The fourth proportional to 2,106.09, 3,155.18 and 1,761.64 is: 2,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.09 : 3,155.18 = 1,761.64 : x
  2. Step 2: Convert to fraction form
    2,106.09/3,155.18 = 1,761.64/x
  3. Step 3: Cross multiply
    2,106.09x = 3,155.18 × 1,761.64
  4. Step 4: Simplify right side
    2,106.09x = 5,558,279.92
  5. Step 5: Solve for x
    x = 5,558,279.92/2,106.09
  6. Step 6: Final answer
    x = 2,639.15

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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.