Home / 3,106.76-4,286.24-1,762.18

Finding the Fourth Proportional to 3,106.76, 4,286.24 and 1,762.18

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Solution

The fourth proportional to 3,106.76, 4,286.24 and 1,762.18 is: 2,431.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.76 : 4,286.24 = 1,762.18 : x
  2. Step 2: Convert to fraction form
    3,106.76/4,286.24 = 1,762.18/x
  3. Step 3: Cross multiply
    3,106.76x = 4,286.24 × 1,762.18
  4. Step 4: Simplify right side
    3,106.76x = 7,553,106.88
  5. Step 5: Solve for x
    x = 7,553,106.88/3,106.76
  6. Step 6: Final answer
    x = 2,431.18

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Half scale
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Double scale
Find fourth proportional to 3,107.76, 4,287.61 and 1,763.18
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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.