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Finding the Fourth Proportional to 6,463.99, 8,920.07 and 3,950.31

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Solution

The fourth proportional to 6,463.99, 8,920.07 and 3,950.31 is: 5,451.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,463.99 : 8,920.07 = 3,950.31 : x
  2. Step 2: Convert to fraction form
    6,463.99/8,920.07 = 3,950.31/x
  3. Step 3: Cross multiply
    6,463.99x = 8,920.07 × 3,950.31
  4. Step 4: Simplify right side
    6,463.99x = 35,237,041.72
  5. Step 5: Solve for x
    x = 35,237,041.72/6,463.99
  6. Step 6: Final answer
    x = 5,451.28

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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.