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Finding the Fourth Proportional to 3,953.72, 5,452.62 and 2,555

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Solution

The fourth proportional to 3,953.72, 5,452.62 and 2,555 is: 3,523.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.72 : 5,452.62 = 2,555 : x
  2. Step 2: Convert to fraction form
    3,953.72/5,452.62 = 2,555/x
  3. Step 3: Cross multiply
    3,953.72x = 5,452.62 × 2,555
  4. Step 4: Simplify right side
    3,953.72x = 13,931,444.10
  5. Step 5: Solve for x
    x = 13,931,444.10/3,953.72
  6. Step 6: Final answer
    x = 3,523.63

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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.