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Finding the Fourth Proportional to 2,672.39, 4,009.16 and 1,029.71

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Solution

The fourth proportional to 2,672.39, 4,009.16 and 1,029.71 is: 1,544.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.39 : 4,009.16 = 1,029.71 : x
  2. Step 2: Convert to fraction form
    2,672.39/4,009.16 = 1,029.71/x
  3. Step 3: Cross multiply
    2,672.39x = 4,009.16 × 1,029.71
  4. Step 4: Simplify right side
    2,672.39x = 4,128,254.67
  5. Step 5: Solve for x
    x = 4,128,254.67/2,672.39
  6. Step 6: Final answer
    x = 1,544.78

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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.