Home / 2,668.28-3,681.86-1,620.16

Finding the Fourth Proportional to 2,668.28, 3,681.86 and 1,620.16

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Solution

The fourth proportional to 2,668.28, 3,681.86 and 1,620.16 is: 2,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.28 : 3,681.86 = 1,620.16 : x
  2. Step 2: Convert to fraction form
    2,668.28/3,681.86 = 1,620.16/x
  3. Step 3: Cross multiply
    2,668.28x = 3,681.86 × 1,620.16
  4. Step 4: Simplify right side
    2,668.28x = 5,965,202.30
  5. Step 5: Solve for x
    x = 5,965,202.30/2,668.28
  6. Step 6: Final answer
    x = 2,235.60

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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.