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Finding the Fourth Proportional to 10,779.84, 16,163.01 and 4,855.50

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Solution

The fourth proportional to 10,779.84, 16,163.01 and 4,855.50 is: 7,280.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,779.84 : 16,163.01 = 4,855.50 : x
  2. Step 2: Convert to fraction form
    10,779.84/16,163.01 = 4,855.50/x
  3. Step 3: Cross multiply
    10,779.84x = 16,163.01 × 4,855.50
  4. Step 4: Simplify right side
    10,779.84x = 78,479,495.06
  5. Step 5: Solve for x
    x = 78,479,495.06/10,779.84
  6. Step 6: Final answer
    x = 7,280.21

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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.