Home / 6,245.57-8,623.86-3,859

Finding the Fourth Proportional to 6,245.57, 8,623.86 and 3,859

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Solution

The fourth proportional to 6,245.57, 8,623.86 and 3,859 is: 5,328.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,245.57 : 8,623.86 = 3,859 : x
  2. Step 2: Convert to fraction form
    6,245.57/8,623.86 = 3,859/x
  3. Step 3: Cross multiply
    6,245.57x = 8,623.86 × 3,859
  4. Step 4: Simplify right side
    6,245.57x = 33,279,475.74
  5. Step 5: Solve for x
    x = 33,279,475.74/6,245.57
  6. Step 6: Final answer
    x = 5,328.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.