Home / 4,165.11-6,245.55-1,390.80

Finding the Fourth Proportional to 4,165.11, 6,245.55 and 1,390.80

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Solution

The fourth proportional to 4,165.11, 6,245.55 and 1,390.80 is: 2,085.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,165.11 : 6,245.55 = 1,390.80 : x
  2. Step 2: Convert to fraction form
    4,165.11/6,245.55 = 1,390.80/x
  3. Step 3: Cross multiply
    4,165.11x = 6,245.55 × 1,390.80
  4. Step 4: Simplify right side
    4,165.11x = 8,686,310.94
  5. Step 5: Solve for x
    x = 8,686,310.94/4,165.11
  6. Step 6: Final answer
    x = 2,085.49

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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.