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Finding the Fourth Proportional to 2,672.64, 4,005.92 and 1,672.45

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Solution

The fourth proportional to 2,672.64, 4,005.92 and 1,672.45 is: 2,506.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.64 : 4,005.92 = 1,672.45 : x
  2. Step 2: Convert to fraction form
    2,672.64/4,005.92 = 1,672.45/x
  3. Step 3: Cross multiply
    2,672.64x = 4,005.92 × 1,672.45
  4. Step 4: Simplify right side
    2,672.64x = 6,699,695.07
  5. Step 5: Solve for x
    x = 6,699,695.07/2,672.64
  6. Step 6: Final answer
    x = 2,506.77

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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.