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Finding the Fourth Proportional to 6,783.98, 9,360.34 and 3,950.72

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Solution

The fourth proportional to 6,783.98, 9,360.34 and 3,950.72 is: 5,451.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,783.98 : 9,360.34 = 3,950.72 : x
  2. Step 2: Convert to fraction form
    6,783.98/9,360.34 = 3,950.72/x
  3. Step 3: Cross multiply
    6,783.98x = 9,360.34 × 3,950.72
  4. Step 4: Simplify right side
    6,783.98x = 36,980,082.44
  5. Step 5: Solve for x
    x = 36,980,082.44/6,783.98
  6. Step 6: Final answer
    x = 5,451.09

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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.