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Finding the Fourth Proportional to 3,339.36, 5,005.86 and 2,103

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Solution

The fourth proportional to 3,339.36, 5,005.86 and 2,103 is: 3,152.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,339.36 : 5,005.86 = 2,103 : x
  2. Step 2: Convert to fraction form
    3,339.36/5,005.86 = 2,103/x
  3. Step 3: Cross multiply
    3,339.36x = 5,005.86 × 2,103
  4. Step 4: Simplify right side
    3,339.36x = 10,527,323.58
  5. Step 5: Solve for x
    x = 10,527,323.58/3,339.36
  6. Step 6: Final answer
    x = 3,152.50

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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.