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Finding the Fourth Proportional to 3,380.68, 5,069.69 and 1,404.99

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Solution

The fourth proportional to 3,380.68, 5,069.69 and 1,404.99 is: 2,106.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.68 : 5,069.69 = 1,404.99 : x
  2. Step 2: Convert to fraction form
    3,380.68/5,069.69 = 1,404.99/x
  3. Step 3: Cross multiply
    3,380.68x = 5,069.69 × 1,404.99
  4. Step 4: Simplify right side
    3,380.68x = 7,122,862.00
  5. Step 5: Solve for x
    x = 7,122,862.00/3,380.68
  6. Step 6: Final answer
    x = 2,106.93

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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.