Home / 3,138.10-4,708.64-2,098.60

Finding the Fourth Proportional to 3,138.10, 4,708.64 and 2,098.60

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Solution

The fourth proportional to 3,138.10, 4,708.64 and 2,098.60 is: 3,148.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.10 : 4,708.64 = 2,098.60 : x
  2. Step 2: Convert to fraction form
    3,138.10/4,708.64 = 2,098.60/x
  3. Step 3: Cross multiply
    3,138.10x = 4,708.64 × 2,098.60
  4. Step 4: Simplify right side
    3,138.10x = 9,881,551.90
  5. Step 5: Solve for x
    x = 9,881,551.90/3,138.10
  6. Step 6: Final answer
    x = 3,148.90

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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.