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Finding the Fourth Proportional to 3,867.36, 5,801.04 and 945.72

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Solution

The fourth proportional to 3,867.36, 5,801.04 and 945.72 is: 1,418.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.36 : 5,801.04 = 945.72 : x
  2. Step 2: Convert to fraction form
    3,867.36/5,801.04 = 945.72/x
  3. Step 3: Cross multiply
    3,867.36x = 5,801.04 × 945.72
  4. Step 4: Simplify right side
    3,867.36x = 5,486,159.55
  5. Step 5: Solve for x
    x = 5,486,159.55/3,867.36
  6. Step 6: Final answer
    x = 1,418.58

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Double scale
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Similar ratio
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1.5x scale

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.