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Finding the Fourth Proportional to 2,102.64, 3,149.16 and 1,007.79

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Solution

The fourth proportional to 2,102.64, 3,149.16 and 1,007.79 is: 1,509.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.64 : 3,149.16 = 1,007.79 : x
  2. Step 2: Convert to fraction form
    2,102.64/3,149.16 = 1,007.79/x
  3. Step 3: Cross multiply
    2,102.64x = 3,149.16 × 1,007.79
  4. Step 4: Simplify right side
    2,102.64x = 3,173,676.21
  5. Step 5: Solve for x
    x = 3,173,676.21/2,102.64
  6. Step 6: Final answer
    x = 1,509.38

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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.