Home / 5,112.92-7,056.05-2,874.89

Finding the Fourth Proportional to 5,112.92, 7,056.05 and 2,874.89

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Solution

The fourth proportional to 5,112.92, 7,056.05 and 2,874.89 is: 3,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.92 : 7,056.05 = 2,874.89 : x
  2. Step 2: Convert to fraction form
    5,112.92/7,056.05 = 2,874.89/x
  3. Step 3: Cross multiply
    5,112.92x = 7,056.05 × 2,874.89
  4. Step 4: Simplify right side
    5,112.92x = 20,285,370.85
  5. Step 5: Solve for x
    x = 20,285,370.85/5,112.92
  6. Step 6: Final answer
    x = 3,967.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.