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Finding the Fourth Proportional to 7,850.55, 11,779.86 and 4,339.90

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Solution

The fourth proportional to 7,850.55, 11,779.86 and 4,339.90 is: 6,512.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,850.55 : 11,779.86 = 4,339.90 : x
  2. Step 2: Convert to fraction form
    7,850.55/11,779.86 = 4,339.90/x
  3. Step 3: Cross multiply
    7,850.55x = 11,779.86 × 4,339.90
  4. Step 4: Simplify right side
    7,850.55x = 51,123,414.41
  5. Step 5: Solve for x
    x = 51,123,414.41/7,850.55
  6. Step 6: Final answer
    x = 6,512.08

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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.