Home / 4,165.08-6,245.56-1,390.80

Finding the Fourth Proportional to 4,165.08, 6,245.56 and 1,390.80

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Solution

The fourth proportional to 4,165.08, 6,245.56 and 1,390.80 is: 2,085.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,165.08 : 6,245.56 = 1,390.80 : x
  2. Step 2: Convert to fraction form
    4,165.08/6,245.56 = 1,390.80/x
  3. Step 3: Cross multiply
    4,165.08x = 6,245.56 × 1,390.80
  4. Step 4: Simplify right side
    4,165.08x = 8,686,324.85
  5. Step 5: Solve for x
    x = 8,686,324.85/4,165.08
  6. Step 6: Final answer
    x = 2,085.51

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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.