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Finding the Fourth Proportional to 6,625.64, 9,939.38 and 3,119.24

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Solution

The fourth proportional to 6,625.64, 9,939.38 and 3,119.24 is: 4,679.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,625.64 : 9,939.38 = 3,119.24 : x
  2. Step 2: Convert to fraction form
    6,625.64/9,939.38 = 3,119.24/x
  3. Step 3: Cross multiply
    6,625.64x = 9,939.38 × 3,119.24
  4. Step 4: Simplify right side
    6,625.64x = 31,003,311.67
  5. Step 5: Solve for x
    x = 31,003,311.67/6,625.64
  6. Step 6: Final answer
    x = 4,679.29

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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.