Home / 2,874.25-3,966.38-1,615.28

Finding the Fourth Proportional to 2,874.25, 3,966.38 and 1,615.28

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Solution

The fourth proportional to 2,874.25, 3,966.38 and 1,615.28 is: 2,229.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.25 : 3,966.38 = 1,615.28 : x
  2. Step 2: Convert to fraction form
    2,874.25/3,966.38 = 1,615.28/x
  3. Step 3: Cross multiply
    2,874.25x = 3,966.38 × 1,615.28
  4. Step 4: Simplify right side
    2,874.25x = 6,406,786.38
  5. Step 5: Solve for x
    x = 6,406,786.38/2,874.25
  6. Step 6: Final answer
    x = 2,229.03

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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.