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Finding the Fourth Proportional to 7,779.95, 11,662.33 and 3,098.55

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Solution

The fourth proportional to 7,779.95, 11,662.33 and 3,098.55 is: 4,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.95 : 11,662.33 = 3,098.55 : x
  2. Step 2: Convert to fraction form
    7,779.95/11,662.33 = 3,098.55/x
  3. Step 3: Cross multiply
    7,779.95x = 11,662.33 × 3,098.55
  4. Step 4: Simplify right side
    7,779.95x = 36,136,312.62
  5. Step 5: Solve for x
    x = 36,136,312.62/7,779.95
  6. Step 6: Final answer
    x = 4,644.80

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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.