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Finding the Fourth Proportional to 6,477.12, 8,939.23 and 3,958.70

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Solution

The fourth proportional to 6,477.12, 8,939.23 and 3,958.70 is: 5,463.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,477.12 : 8,939.23 = 3,958.70 : x
  2. Step 2: Convert to fraction form
    6,477.12/8,939.23 = 3,958.70/x
  3. Step 3: Cross multiply
    6,477.12x = 8,939.23 × 3,958.70
  4. Step 4: Simplify right side
    6,477.12x = 35,387,675.21
  5. Step 5: Solve for x
    x = 35,387,675.21/6,477.12
  6. Step 6: Final answer
    x = 5,463.49

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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.