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Finding the Fourth Proportional to 4,876.67, 6,728.05 and 2,779.58

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Solution

The fourth proportional to 4,876.67, 6,728.05 and 2,779.58 is: 3,834.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,876.67 : 6,728.05 = 2,779.58 : x
  2. Step 2: Convert to fraction form
    4,876.67/6,728.05 = 2,779.58/x
  3. Step 3: Cross multiply
    4,876.67x = 6,728.05 × 2,779.58
  4. Step 4: Simplify right side
    4,876.67x = 18,701,153.22
  5. Step 5: Solve for x
    x = 18,701,153.22/4,876.67
  6. Step 6: Final answer
    x = 3,834.82

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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.