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Finding the Fourth Proportional to 2,784.92, 4,176.92 and 836.78

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Solution

The fourth proportional to 2,784.92, 4,176.92 and 836.78 is: 1,255.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.92 : 4,176.92 = 836.78 : x
  2. Step 2: Convert to fraction form
    2,784.92/4,176.92 = 836.78/x
  3. Step 3: Cross multiply
    2,784.92x = 4,176.92 × 836.78
  4. Step 4: Simplify right side
    2,784.92x = 3,495,138.05
  5. Step 5: Solve for x
    x = 3,495,138.05/2,784.92
  6. Step 6: Final answer
    x = 1,255.03

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1.5x scale

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.