Home / 4,189.49-6,279.85-1,415.19

Finding the Fourth Proportional to 4,189.49, 6,279.85 and 1,415.19

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Solution

The fourth proportional to 4,189.49, 6,279.85 and 1,415.19 is: 2,121.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.49 : 6,279.85 = 1,415.19 : x
  2. Step 2: Convert to fraction form
    4,189.49/6,279.85 = 1,415.19/x
  3. Step 3: Cross multiply
    4,189.49x = 6,279.85 × 1,415.19
  4. Step 4: Simplify right side
    4,189.49x = 8,887,180.92
  5. Step 5: Solve for x
    x = 8,887,180.92/4,189.49
  6. Step 6: Final answer
    x = 2,121.30

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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.