Home / 2,290.76-3,169.58-1,996.64

Finding the Fourth Proportional to 2,290.76, 3,169.58 and 1,996.64

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Solution

The fourth proportional to 2,290.76, 3,169.58 and 1,996.64 is: 2,762.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.76 : 3,169.58 = 1,996.64 : x
  2. Step 2: Convert to fraction form
    2,290.76/3,169.58 = 1,996.64/x
  3. Step 3: Cross multiply
    2,290.76x = 3,169.58 × 1,996.64
  4. Step 4: Simplify right side
    2,290.76x = 6,328,510.21
  5. Step 5: Solve for x
    x = 6,328,510.21/2,290.76
  6. Step 6: Final answer
    x = 2,762.62

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Half scale
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Double scale
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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.