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Finding the Fourth Proportional to 6,790.59, 10,185.84 and 1,860.21

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Solution

The fourth proportional to 6,790.59, 10,185.84 and 1,860.21 is: 2,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,790.59 : 10,185.84 = 1,860.21 : x
  2. Step 2: Convert to fraction form
    6,790.59/10,185.84 = 1,860.21/x
  3. Step 3: Cross multiply
    6,790.59x = 10,185.84 × 1,860.21
  4. Step 4: Simplify right side
    6,790.59x = 18,947,801.43
  5. Step 5: Solve for x
    x = 18,947,801.43/6,790.59
  6. Step 6: Final answer
    x = 2,790.30

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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.