Home / 8,142.49-12,206.40-2,874.35

Finding the Fourth Proportional to 8,142.49, 12,206.40 and 2,874.35

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Solution

The fourth proportional to 8,142.49, 12,206.40 and 2,874.35 is: 4,308.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.49 : 12,206.40 = 2,874.35 : x
  2. Step 2: Convert to fraction form
    8,142.49/12,206.40 = 2,874.35/x
  3. Step 3: Cross multiply
    8,142.49x = 12,206.40 × 2,874.35
  4. Step 4: Simplify right side
    8,142.49x = 35,085,485.58
  5. Step 5: Solve for x
    x = 35,085,485.58/8,142.49
  6. Step 6: Final answer
    x = 4,308.94

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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.