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Finding the Fourth Proportional to 10,757.80, 16,114.02 and 4,919.32

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Solution

The fourth proportional to 10,757.80, 16,114.02 and 4,919.32 is: 7,368.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,757.80 : 16,114.02 = 4,919.32 : x
  2. Step 2: Convert to fraction form
    10,757.80/16,114.02 = 4,919.32/x
  3. Step 3: Cross multiply
    10,757.80x = 16,114.02 × 4,919.32
  4. Step 4: Simplify right side
    10,757.80x = 79,270,020.87
  5. Step 5: Solve for x
    x = 79,270,020.87/10,757.80
  6. Step 6: Final answer
    x = 7,368.61

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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.