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Finding the Fourth Proportional to 4,903.86, 6,766.91 and 2,778.90

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Solution

The fourth proportional to 4,903.86, 6,766.91 and 2,778.90 is: 3,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,903.86 : 6,766.91 = 2,778.90 : x
  2. Step 2: Convert to fraction form
    4,903.86/6,766.91 = 2,778.90/x
  3. Step 3: Cross multiply
    4,903.86x = 6,766.91 × 2,778.90
  4. Step 4: Simplify right side
    4,903.86x = 18,804,573.15
  5. Step 5: Solve for x
    x = 18,804,573.15/4,903.86
  6. Step 6: Final answer
    x = 3,834.65

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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.