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Finding the Fourth Proportional to 2,867.55, 3,956.29 and 1,672.27

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Solution

The fourth proportional to 2,867.55, 3,956.29 and 1,672.27 is: 2,307.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.55 : 3,956.29 = 1,672.27 : x
  2. Step 2: Convert to fraction form
    2,867.55/3,956.29 = 1,672.27/x
  3. Step 3: Cross multiply
    2,867.55x = 3,956.29 × 1,672.27
  4. Step 4: Simplify right side
    2,867.55x = 6,615,971.01
  5. Step 5: Solve for x
    x = 6,615,971.01/2,867.55
  6. Step 6: Final answer
    x = 2,307.18

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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.